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Lahiri D, Krishna KVM, Verma AK, Modak P, Vishwanadh B, Chattopadhyay S, Shibata T, Sharma SK, Sarkar SK, Clifton PH, Biswas A, Garg N, K Dey G. Comprehensive characterization of the structure of Zr-based metallic glasses. Sci Rep 2024; 14:4911. [PMID: 38418473 PMCID: PMC10902397 DOI: 10.1038/s41598-024-53509-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 02/01/2024] [Indexed: 03/01/2024] Open
Abstract
Structure of metallic glasses fascinates as the generic amorphous structural template for ubiquitous systems. Its specification necessitates determination of the complete hierarchical structure, starting from short-range-order (SRO) → medium-range-order (MRO) → bulk structure and free volume (FV) distribution. This link has largely remained elusive since previous investigations adopted one-technique-at-a-time approach, focusing on limited aspects of any one domain. Reconstruction of structure from experimental data inversion is non-unique for many of these techniques. As a result, complete and precise structural understanding of glass has not emerged yet. In this work, we demonstrate the first experimental pathway for reconstruction of the integrated structure, forZr 67 Ni 33 andZr 52 Ti 6 Al 10 Cu 18 Ni 14 glasses. Our strategy engages diverse (× 7) multi-scale techniques [XAFS, 3D-APT, ABED/NBED, FEM, XRD, PAS, FHREM] on the same glass. This strategy complemented mutual limitations of techniques and corroborated common parameters to generate complete, self-consistent and precise parameters. Further, MRO domain size and inter-void separation were correlated to identify the presence of FV at MRO boundaries. This enabled the first experimental reconstruction of hierarchical subset: SRO → MRO → FV → bulk structure. The first ever image of intermediate region between MRO domains emerged from this link. We clarify that determination of all subsets is not our objective; the essence and novelty of this work lies in directing the pathway towards finite solution, in the most logical and unambiguous way.
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Affiliation(s)
- Debdutta Lahiri
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
| | - K V Mani Krishna
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Ashok K Verma
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
| | - P Modak
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - B Vishwanadh
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Soma Chattopadhyay
- Physical Sciences Department, Elgin Community College, 1700 Spartan Drive, Elgin, IL, 60123, USA
| | - Tomohiro Shibata
- Materials Science, Kennametal Inc., 1600 Technology Way, Latrobe, PA, 15650, USA
| | - S K Sharma
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Sudip Kumar Sarkar
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | | | - A Biswas
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Nandini Garg
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - G K Dey
- Materials Group, Bhabha Atomic Research Centre, Mumbai, 400085, India
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2
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Sun Y, Mendelev MI, Zhang F, Liu X, Da B, Wang CZ, Wentzcovitch RM, Ho KM. Unveiling the effect of Ni on the formation and structure of Earth's inner core. Proc Natl Acad Sci U S A 2024; 121:e2316477121. [PMID: 38236737 PMCID: PMC10823253 DOI: 10.1073/pnas.2316477121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 12/09/2023] [Indexed: 02/01/2024] Open
Abstract
Ni is the second most abundant element in the Earth's core. Yet, its effects on the inner core's structure and formation process are usually disregarded because of its electronic and size similarity with Fe. Using ab initio molecular dynamics simulations, we find that the bcc phase can spontaneously crystallize in liquid Ni at temperatures above Fe's melting point at inner core pressures. The melting temperature of Ni is shown to be 700 to 800 K higher than that of Fe at 323 to 360 GPa. hcp, bcc, and liquid phase relations differ for Fe and Ni. Ni can be a bcc stabilizer for Fe at high temperatures and inner core pressures. A small amount of Ni can accelerate Fe's crystallization at core pressures. These results suggest that Ni may substantially impact the structure and formation process of the solid inner core.
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Affiliation(s)
- Yang Sun
- Department of Physics, Xiamen University, Xiamen361005, China
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY10027
- Department of Physics, Iowa State University, Ames, IA50011
| | | | - Feng Zhang
- Department of Physics, Iowa State University, Ames, IA50011
| | - Xun Liu
- Center for Basic Research on Materials, National Institute for Materials Science, Ibaraki305-0044, Japan
| | - Bo Da
- Center for Basic Research on Materials, National Institute for Materials Science, Ibaraki305-0044, Japan
| | | | - Renata M. Wentzcovitch
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY10027
- Department of Earth and Environmental Sciences, Columbia University, New York, NY10027
- Lamont–Doherty Earth Observatory, Columbia University, Palisades, NY10964
- Data Science Institute, Columbia University, New York, NY10027
- Center for Computational Quantum Physics, Flatiron Institute, New York, NY10010
| | - Kai-Ming Ho
- Department of Physics, Iowa State University, Ames, IA50011
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3
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Xie K, Qiao C, Shen H, Yang R, Xu M, Zhang C, Zheng Y, Zhang R, Chen L, Ho KM, Wang CZ, Wang S. Neural network potential for Zr-Rh system by machine learning. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 34:075402. [PMID: 34753113 DOI: 10.1088/1361-648x/ac37dc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 11/09/2021] [Indexed: 06/13/2023]
Abstract
Zr-Rh metallic glass has enabled its many applications in vehicle parts, sports equipment and so on due to its outstanding performance in mechanical property, but the knowledge of the microstructure determining the superb mechanical property remains yet insufficient. Here, we develop a deep neural network potential of Zr-Rh system by using machine learning, which breaks the dilemma between the accuracy and efficiency in molecular dynamics simulations, and greatly improves the simulation scale in both space and time. The results show that the structural features obtained from the neural network method are in good agreement with the cases inab initiomolecular dynamics simulations. Furthermore, we build a large model of 5400 atoms to explore the influences of simulated size and cooling rate on the melt-quenching process of Zr77Rh23. Our study lays a foundation for exploring the complex structures in amorphous Zr77Rh23, which is of great significance for the design and practical application.
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Affiliation(s)
- Kun Xie
- Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Department of Optical Science and Engineering, Fudan University, Shanghai, 200433, People's Republic of China
| | - Chong Qiao
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Hong Shen
- Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Department of Optical Science and Engineering, Fudan University, Shanghai, 200433, People's Republic of China
| | - Riyi Yang
- Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Department of Optical Science and Engineering, Fudan University, Shanghai, 200433, People's Republic of China
| | - Ming Xu
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Chao Zhang
- Department of Physics, Yantai University, Yantai, 264005, People's Republic of China
| | - Yuxiang Zheng
- Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Department of Optical Science and Engineering, Fudan University, Shanghai, 200433, People's Republic of China
| | - Rongjun Zhang
- Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Department of Optical Science and Engineering, Fudan University, Shanghai, 200433, People's Republic of China
| | - Liangyao Chen
- Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Department of Optical Science and Engineering, Fudan University, Shanghai, 200433, People's Republic of China
| | - Kai-Ming Ho
- Ames Laboratory, US Department of Energy and Department of Physics, Iowa State University, Ames, Iowa 50011, United States of America
| | - Cai-Zhuang Wang
- Ames Laboratory, US Department of Energy and Department of Physics, Iowa State University, Ames, Iowa 50011, United States of America
| | - Songyou Wang
- Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Department of Optical Science and Engineering, Fudan University, Shanghai, 200433, People's Republic of China
- Key Laboratory for Information Science of Electromagnetic Waves (MoE), Shanghai 200433, People's Republic of China
- Yiwu Research Institute of Fudan University, Yiwu 322000, People's Republic of China
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4
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Tang L, Ho KM, Wang CZ. Molecular dynamics simulation of metallic Al-Ce liquids using a neural network machine learning interatomic potential. J Chem Phys 2021; 155:194503. [PMID: 34800941 DOI: 10.1063/5.0066061] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Al-rich Al-Ce alloys have the possibility of replacing heavier steel and cast irons for use in high-temperature applications. Knowledge about the structures and properties of Al-Ce alloys at the liquid state is vital for optimizing the manufacture process to produce desired alloys. However, reliable molecular dynamics simulation of Al-Ce alloy systems remains a great challenge due to the lack of accurate Al-Ce interatomic potential. Here, an artificial neural network (ANN) deep machine learning (ML) method is used to develop a reliable interatomic potential for Al-Ce alloys. Ab initio molecular dynamics simulation data on the Al-Ce liquid with a small unit cell (∼200 atoms) and on the known Al-Ce crystalline compounds are collected to train the interatomic potential using ANN-ML. The obtained ANN-ML model reproduces well the energies, forces, and atomic structure of the Al90Ce10 liquid and crystalline phases of Al-Ce compounds in comparison with the ab initio results. The developed ANN-ML potential is applied in molecular dynamics simulations to study the structures and properties of the metallic Al90Ce10 liquid, which would provide useful insight into the guiding experimental process to produce desired Al-Ce alloys.
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Affiliation(s)
- L Tang
- Department of Applied Physics, College of Science, Zhejiang University of Technology, Hangzhou 310023, China
| | - K M Ho
- Ames Laboratory-USDOE, Iowa State University, Ames, Iowa 50011, USA
| | - C Z Wang
- Ames Laboratory-USDOE, Iowa State University, Ames, Iowa 50011, USA
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5
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Zhang H, Wang X, Yu HB, Douglas JF. Dynamic heterogeneity, cooperative motion, and Johari-Goldstein [Formula: see text]-relaxation in a metallic glass-forming material exhibiting a fragile-to-strong transition. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2021; 44:56. [PMID: 33871722 DOI: 10.1140/epje/s10189-021-00060-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 03/21/2021] [Indexed: 06/12/2023]
Abstract
We investigate the Johari-Goldstein (JG) [Formula: see text]-relaxation process in a model metallic glass-forming (GF) material ([Formula: see text]), previously studied extensively by both frequency-dependent mechanical measurements and simulation studies devoted to equilibrium properties, by molecular dynamics simulations based on validated and optimized interatomic potentials with the primary aim of better understanding the nature of this universal relaxation process from a dynamic heterogeneity (DH) perspective. The present relatively low temperature and long-time simulations reveal a direct correspondence between the JG [Formula: see text]-relaxation time [Formula: see text] and the lifetime of the mobile particle clusters [Formula: see text], defined as in previous DH studies, a relationship dual to the corresponding previously observed relationship between the [Formula: see text]-relaxation time [Formula: see text] and the lifetime of immobile particle clusters [Formula: see text]. Moreover, we find that the average diffusion coefficient D nearly coincides with [Formula: see text] of the smaller atomic species (Al) and that the 'hopping time' associated with D coincides with [Formula: see text] to within numerical uncertainty, both trends being in accord with experimental studies. This indicates that the JG [Formula: see text]-relaxation is dominated by the smaller atomic species and the observation of a direct relation between this relaxation process and rate of molecular diffusion in GF materials at low temperatures where the JG [Formula: see text]-relaxation becomes the prevalent mode of structural relaxation. As an unanticipated aspect of our study, we find that [Formula: see text] exhibits fragile-to-strong (FS) glass formation, as found in many other metallic GF liquids, but this fact does not greatly alter the geometrical nature of DH in this material and the relation of DH to dynamical properties. On the other hand, the temperature dependence of the DH and dynamical properties, such as the structural relaxation time, can be significantly altered from 'ordinary' GF liquids.
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Affiliation(s)
- Hao Zhang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada.
| | - Xinyi Wang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Hai-Bin Yu
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
| | - Jack F Douglas
- Material Measurement Laboratory, Materials Science and Engineering Division, National Institute of Standards and Technology(NIST), Gaithersburg, MD, 20899, USA.
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6
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Zhang H, Wang X, Yu HB, Douglas JF. Fast dynamics in a model metallic glass-forming material. J Chem Phys 2021; 154:084505. [DOI: 10.1063/5.0039162] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Hao Zhang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Xinyi Wang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Hai-Bin Yu
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Jack F. Douglas
- Material Measurement Laboratory, Material Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
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7
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Ren S, Sun Y, Zhang F, Travesset A, Wang CZ, Ho KM. Phase Diagram and Structure Map of Binary Nanoparticle Superlattices from a Lennard-Jones Model. ACS NANO 2020; 14:6795-6802. [PMID: 32479719 DOI: 10.1021/acsnano.0c00250] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A first-principles prediction of the binary nanoparticle phase diagram assembled by solvent evaporation has eluded theoretical approaches. In this paper, we show that a binary system interacting through the Lennard-Jones (LJ) potential contains all experimental phases in which nanoparticles are effectively described as quasi hard spheres. We report a phase diagram consisting of 53 equilibrium phases, whose stability is quite insensitive to the microscopic details of the potentials, thus giving rise to some type of universality. Furthermore, we show that binary lattices may be understood as consisting of certain particle clusters, i.e., motifs, that provide a generalization of the four conventional Frank-Kasper polyhedral units. Our results show that metastable phases share the very same motifs as equilibrium phases. We discuss the connection with packing models, phase diagrams with repulsive potentials, and the prediction of likely experimental superlattices.
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Affiliation(s)
- Shang Ren
- Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, United States
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Yang Sun
- Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, United States
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, United States
| | - Feng Zhang
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Alex Travesset
- Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, United States
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Cai-Zhuang Wang
- Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, United States
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Kai-Ming Ho
- Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, United States
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
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8
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Mendelev MI, Sun Y, Zhang F, Wang CZ, Ho KM. Development of a semi-empirical potential suitable for molecular dynamics simulation of vitrification in Cu-Zr alloys. J Chem Phys 2019; 151:214502. [DOI: 10.1063/1.5131500] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- M. I. Mendelev
- Division of Materials Sciences and Engineering, Ames Laboratory (U.S. Department of Energy), Ames, Iowa 50011, USA
| | - Y. Sun
- Division of Materials Sciences and Engineering, Ames Laboratory (U.S. Department of Energy), Ames, Iowa 50011, USA
| | - F. Zhang
- Division of Materials Sciences and Engineering, Ames Laboratory (U.S. Department of Energy), Ames, Iowa 50011, USA
| | - C. Z. Wang
- Division of Materials Sciences and Engineering, Ames Laboratory (U.S. Department of Energy), Ames, Iowa 50011, USA
| | - K. M. Ho
- Division of Materials Sciences and Engineering, Ames Laboratory (U.S. Department of Energy), Ames, Iowa 50011, USA
- Department of Physics, Iowa State University, Ames, Iowa 50011, USA
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
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9
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Ye Z, Meng F, Zhang F, Sun Y, Yang L, Zhou SH, Napolitano RE, Mendelev MI, Ott RT, Kramer MJ, Wang CZ, Ho KM. Observation of η-Al 41Sm 5 reveals motif-aware structural evolution in Al-Sm alloys. Sci Rep 2019; 9:6692. [PMID: 31040308 PMCID: PMC6491476 DOI: 10.1038/s41598-019-43079-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 01/02/2019] [Indexed: 11/08/2022] Open
Abstract
Using an effective genetic algorithm, we uncover the structure of a metastable Al41Sm5 phase that supplements its family sharing similar short-range orders. The phase evolves upon heating an amorphous Al-9.7 at.% Sm ribbon, produced by melt-spinning. The dynamical phase selection is discussed with respect to the structural connections between the short-range packing motifs in the amorphous precursor and those observed in the selected phases. The phase elucidated here is one of several newly discovered large-unit-cell phases found to form during devitrification from the glass in this binary system, further illustrating the power and efficiency of our approach, the important role of structural hierarchy in phase selection, and the richness of the metastable phase landscape accessible from the glassy structure.
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Affiliation(s)
- Z Ye
- Ames Laboratory, US Department of Energy, Ames, Iowa, 50011, USA.
| | - F Meng
- Ames Laboratory, US Department of Energy, Ames, Iowa, 50011, USA
| | - F Zhang
- Ames Laboratory, US Department of Energy, Ames, Iowa, 50011, USA
| | - Y Sun
- Ames Laboratory, US Department of Energy, Ames, Iowa, 50011, USA
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - L Yang
- Ames Laboratory, US Department of Energy, Ames, Iowa, 50011, USA
| | - S H Zhou
- Ames Laboratory, US Department of Energy, Ames, Iowa, 50011, USA
| | - R E Napolitano
- Ames Laboratory, US Department of Energy, Ames, Iowa, 50011, USA
- Department of Materials Sci. and Eng., Iowa State University, Ames, Iowa, 50011, USA
| | - M I Mendelev
- Ames Laboratory, US Department of Energy, Ames, Iowa, 50011, USA
| | - R T Ott
- Ames Laboratory, US Department of Energy, Ames, Iowa, 50011, USA
| | - M J Kramer
- Ames Laboratory, US Department of Energy, Ames, Iowa, 50011, USA
| | - C Z Wang
- Ames Laboratory, US Department of Energy, Ames, Iowa, 50011, USA
| | - K M Ho
- Ames Laboratory, US Department of Energy, Ames, Iowa, 50011, USA.
- Department of Physics, Iowa State University, Ames, Iowa, 50011, USA.
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui, 230026, China.
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10
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Wei D, Yang J, Jiang MQ, Dai LH, Wang YJ, Dyre JC, Douglass I, Harrowell P. Assessing the utility of structure in amorphous materials. J Chem Phys 2019; 150:114502. [PMID: 30902013 DOI: 10.1063/1.5064531] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
This paper presents a set of general strategies for the analysis of structure in amorphous materials and a general approach to assessing the utility of any selected structural description. Two measures of structure are defined, "diversity" and "utility," and applied to two model glass forming binary atomic alloys, Cu50Zr50 and a Lennard-Jones A80B20 mixture. We show that the change in diversity associated with selecting Voronoi structures with high localization or low energy, while real, is too weak to support claims that specific structures are the prime cause of these local physical properties. In addition, a new structure-free measure of incipient crystal-like organization in mixtures is introduced, suitable for cases where the stable crystal is a compound structure.
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Affiliation(s)
- Dan Wei
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China and School of Engineering Science, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China
| | - Jie Yang
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China and School of Engineering Science, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China
| | - Min-Qiang Jiang
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China and School of Engineering Science, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China
| | - Lan-Hong Dai
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China and School of Engineering Science, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China
| | - Yun-Jiang Wang
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China and School of Engineering Science, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China
| | - Jeppe C Dyre
- Glass and Time, IMFUFA, Department of Science and Environment, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark
| | - Ian Douglass
- School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia
| | - Peter Harrowell
- School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia
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11
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Ryltsev RE, Klumov BA, Chtchelkatchev NM, Shunyaev KY. Nucleation instability in supercooled Cu-Zr-Al glass-forming liquids. J Chem Phys 2018; 149:164502. [PMID: 30384697 DOI: 10.1063/1.5054631] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Few general models representing certain classes of real glass-forming systems play a special role in computer simulations of supercooled liquid and glasses. Recently, it was shown that one of the most widely used model glassformers-the Kob-Andersen binary mixture-crystalizes in quite lengthy molecular dynamics simulations, and moreover, it is in fact a very poor glassformer at large system sizes. Thus, our understanding of crystallization stability of model glassformers is far from complete due to the fact that relatively small system sizes and short time scales have been considered so far. Here we address this issue for two embedded atom models intensively used last years in numerical studies of Cu-Zr-(Al) bulk metallic glasses. Exploring the structural evolution of Cu64.5Zr35.5 and Cu46Zr46Al8 alloys at continuous cooling and isothermal annealing, we observe that both systems nucleate in sufficiently lengthy simulations, although critical nucleation time for the latter is an order of magnitude higher than that for the former. We show that Cu64.5Zr35.5 is actually unstable to crystallization for large system sizes (N > 20 000). Both systems crystallize with the formation of tetrahedrally close packed Laves phases of different types. We argue that nucleation instability of the simulated Cu64.5Zr35.5 alloy is due to the fact that its composition is very close to that for the stable Cu2Zr compound with a C15 Laves phase structure.
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Affiliation(s)
- R E Ryltsev
- Institute of Metallurgy, Ural Branch of Russian Academy of Sciences, 101 Amundsena str., Ekaterinburg 620016, Russia
| | - B A Klumov
- Ural Federal University, 19 Mira str., Ekaterinburg 620002, Russia
| | - N M Chtchelkatchev
- Institute of Metallurgy, Ural Branch of Russian Academy of Sciences, 101 Amundsena str., Ekaterinburg 620016, Russia
| | - K Yu Shunyaev
- Institute of Metallurgy, Ural Branch of Russian Academy of Sciences, 101 Amundsena str., Ekaterinburg 620016, Russia
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12
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Atomistic Simulations to Predict Favored Glass-Formation Composition and Ion-Beam-Mixing of Nano-Multiple-Metal-Layers to Produce Ternary Amorphous Films. METALS 2018. [DOI: 10.3390/met8020129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Based on the framework of long-range empirical formulas, the interatomic potentials were constructed for the Ni-Nb-Mo (fcc-bcc-bcc) and Ni-Zr-Mo (fcc-hcp-bcc) ternary metal systems. Applying the constructed potentials, atomistic simulations were performed to predict the energetically favored glass formation regions (GFRs) in the respective composition triangles of the systems. In addition, the amorphization driving forces (ADFs), i.e., the energy differences between the solid solutions and disordered phases, were computed and appeared to correlate with the so-called glass forming abilities. To verify the atomistic prediction, ion beam mixing with nano-multiple-metal-layers was carried out to produce ternary amorphous films. The results showed that the composition of ternary amorphous films obtained by ion beam mixing all locate inside the GFRs, supporting the predictions of atomistic simulations. Interestingly, the minimum ion dosage required for amorphization showed a negative correlation with the calculated ADF, implying that the predicted amorphization driving force could be an indicator of the glass formation ability.
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13
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Wen TQ, Tang L, Sun Y, Ho KM, Wang CZ, Wang N. Crystal genes in a marginal glass-forming system of Ni 50Zr 50. Phys Chem Chem Phys 2018; 19:30429-30438. [PMID: 29104995 DOI: 10.1039/c7cp05976k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The marginal glass-forming ability (GFA) of a binary Ni-Zr system is an issue to be explained considering numerous bulk metallic glasses (BMGs) found in a Cu-Zr system. Using molecular dynamics, the structures and dynamics of Ni50Zr50 metallic liquid and glass are investigated at the atomistic level. To achieve a well-relaxed glassy sample, a sub-Tg annealing method is applied and the final sample is closer to the experiments than the models prepared by continuous cooling. With the state-of-the-art structural analysis tools such as cluster alignment and pair-wise alignment methods, two glass-forming motifs with some mixed traits of a metastable B2 crystalline phase and a crystalline Ni-centered B33 motif are found to be dominant in the undercooled liquid and glass samples. A new chemical order characterization on each short-range order (SRO) structure is accomplished based on the cluster alignment method. The significant amount of the crystalline motif and the few icosahedra in the glassy sample deteriorate the GFA.
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Affiliation(s)
- T Q Wen
- MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Natural and Applied Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
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14
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Yang MH, Li JH, Liu BX. Comparatively studying the local atomic structures of metallic glasses upon cyclic-loading by computer simulations. RSC Adv 2017. [DOI: 10.1039/c7ra00570a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Through a variety of local structural analysis methods, it is revealed that the NixZr100–xMGs exhibit a combination of the icosahedral-, fcc- and hcp-like configurations, while the icosahedra or distorted icosahedra cover a dominant fraction.
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Affiliation(s)
- M. H. Yang
- Key Laboratory of Advanced Materials (MOE)
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - J. H. Li
- Key Laboratory of Advanced Materials (MOE)
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - B. X. Liu
- Key Laboratory of Advanced Materials (MOE)
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
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15
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Ryltsev RE, Klumov BA, Chtchelkatchev NM, Shunyaev KY. Cooling rate dependence of simulated Cu64.5Zr35.5 metallic glass structure. J Chem Phys 2016; 145:034506. [DOI: 10.1063/1.4958631] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- R. E. Ryltsev
- Institute of Metallurgy, Ural Branch of Russian Academy of Sciences, 101 Amundsen Str., 620016 Ekaterinburg, Russia
- Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia
- L.D. Landau Institute for Theoretical Physics, Russian Academy of Sciences, 2 Kosygina Str., 119334 Moscow, Russia
| | - B. A. Klumov
- L.D. Landau Institute for Theoretical Physics, Russian Academy of Sciences, 2 Kosygina Str., 119334 Moscow, Russia
- Aix-Marseille-Université, CNRS, Laboratoire PIIM, UMR 7345, 13397 Marseille Cedex 20, France
- High Temperature Institute, Russian Academy of Sciences, 13/2 Izhorskaya Str., 125412 Moscow, Russia
| | - N. M. Chtchelkatchev
- Institute of Metallurgy, Ural Branch of Russian Academy of Sciences, 101 Amundsen Str., 620016 Ekaterinburg, Russia
- L.D. Landau Institute for Theoretical Physics, Russian Academy of Sciences, 2 Kosygina Str., 119334 Moscow, Russia
- Moscow Institute of Physics and Technology, 9 Institutskiy Per., Dolgoprudny, 141700 Moscow Region, Russia
- All-Russia Research Institute of Automatics, 22 Sushchevskaya, 127055 Moscow, Russia
| | - K. Yu. Shunyaev
- Institute of Metallurgy, Ural Branch of Russian Academy of Sciences, 101 Amundsen Str., 620016 Ekaterinburg, Russia
- Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia
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