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Liu Y, Zan Y, Wang D, Song M, Shao X, Hao H, Jin Q, Wang W, Xiao B, Ma Z. Design of a Thermally Stable Heat-Resistant (Al 2O 3+Al 3Ti)/Al Composite with Excellent High-Temperature Mechanical Properties: Multimechanism Synergistic Strengthening Strategy. NANO LETTERS 2024; 24:10244-10250. [PMID: 39116288 DOI: 10.1021/acs.nanolett.4c02619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
The effectiveness of the room-temperature strengthening strategy for aluminum (Al) is compromised at increased temperatures due to grain and precipitate phase coarsening. Overcoming the heightened activity of grain boundaries and dislocations poses a significant challenge in enhancing the high-temperature strength through traditional precipitation strengthening. This study presents novel strengthening strategies that integrate intergranular reinforcements, intragranular reinforcements, refined grain, and stacking faults within an (Al2O3+Al3Ti)/Al composite prepared using sol-gel and powder metallurgy technology. Excellent high-temperature tensile properties are achieved; also, a remarkable fatigue performance at increased temperatures that surpasses those of other existing Al alloys and composites is revealed. These superior characteristics can be attributed to its exceptionally stable microstructure and the synergistic strengthening mechanisms mentioned above. This work offers new insights into designing and fabricating thermally stable Al matrix composites for high-temperature applications.
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Affiliation(s)
- Yin Liu
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China
| | - Yuning Zan
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Dong Wang
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Miao Song
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Xiaohong Shao
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Huali Hao
- School of Civil Engineering, Wuhan University, Wuhan 430000, China
| | - Qianqian Jin
- Center for the Structure of Advanced Matter, School of Electronic Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
| | - Wenguang Wang
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Bolv Xiao
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Zongyi Ma
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
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Deng H, Chen Y, Zhu Q, Zhao Q, Huang Q, Wang J, Zhou H. Controllable Pseudoelasticity in Metallic Nanocrystals by Grain Boundary Engineering. NANO LETTERS 2024; 24:2511-2519. [PMID: 38373158 DOI: 10.1021/acs.nanolett.3c04439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
Materials with pseudoelasticity can recover from large strains exceeding their elastic limits during unloading, making them promising damage-tolerant building blocks for advanced nanodevices. Nevertheless, a practical approach to realize controllable pseudoelastic behavior at nanoscale remains challenging. Here, we proposed a grain boundary (GB) engineering approach to endow metallic nanocrystals with a controllable pseudoelasticity. Both in situ nanomechanical testing and atomistic simulations demonstrate that such controllable pseudoelasticity is governed by the extension and contraction of an inherent stacking fault array at the GB. By precisely tuning GB misorientation and inclination, our simulation results reveal that metallic nanocrystals can exhibit tailored pseudoelastic performance across a broad spectrum of GBs in different face-centered cubic metals. These findings enrich our understanding of the intrinsic pseudoelasticity of GBs and provide a GB engineering approach toward metallic materials with reversible deformability.
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Affiliation(s)
- Hailin Deng
- Center for X-Mechanics, Department of Engineering Mechanics, Zhejiang University, Hangzhou 310027, China
| | - Yingbin Chen
- Center of Electron Microscopy, State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qi Zhu
- School of Mechanical and Aerospace Engineering, College of Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Qingkun Zhao
- Center for X-Mechanics, Department of Engineering Mechanics, Zhejiang University, Hangzhou 310027, China
| | - Qishan Huang
- Center for X-Mechanics, Department of Engineering Mechanics, Zhejiang University, Hangzhou 310027, China
| | - Jiangwei Wang
- Center of Electron Microscopy, State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Institute of Wenzhou, Zhejiang University, Wenzhou 325006, China
| | - Haofei Zhou
- Center for X-Mechanics, Department of Engineering Mechanics, Zhejiang University, Hangzhou 310027, China
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Phase transformation path in Aluminum under ramp compression; simulation and experimental study. Sci Rep 2022; 12:18954. [DOI: 10.1038/s41598-022-23785-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 11/04/2022] [Indexed: 11/09/2022] Open
Abstract
AbstractWe present a framework based on non-equilibrium molecular dynamics (NEMD) to reproduce the phase transformation event of Aluminum under ramp compression loading. The simulated stress-density response, virtual x-ray diffraction patterns, and structure analysis are compared against the previously observed experimental laser-driven ramp compression in-situ x-ray diffraction data. The NEMD simulations show the solid–solid phase transitions are consistent to experimental observations with a close-packed face-centered cubic (fcc) (111), hexagonal close-packed (hcp) structure (002), and body-centered cubic bcc (110) planes remaining parallel. The atomic-level analysis of NEMD simulations identifiy the exact phase transformation pathway happening via Bain transformation while the previous in situ x-ray diffraction data did not provide sufficient information for deducing the exact phase transformation path.
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High stress twinning in a compositionally complex steel of very high stacking fault energy. Nat Commun 2022; 13:3598. [PMID: 35739123 PMCID: PMC9226120 DOI: 10.1038/s41467-022-31315-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 06/07/2022] [Indexed: 11/25/2022] Open
Abstract
Deformation twinning is rarely found in bulk face-centered cubic (FCC) alloys with very high stacking fault energy (SFE) under standard loading conditions. Here, based on results from bulk quasi-static tensile experiments, we report deformation twinning in a micrometer grain-sized compositionally complex steel (CCS) with a very high SFE of ~79 mJ/m2, far above the SFE regime for twinning (<~50 mJ/m2) reported for FCC steels. The dual-nanoprecipitation, enabled by the compositional degrees of freedom, contributes to an ultrahigh true tensile stress up to 1.9 GPa in our CCS. The strengthening effect enhances the flow stress to reach the high critical value for the onset of mechanical twinning. The formation of nanotwins in turn enables further strain hardening and toughening mechanisms that enhance the mechanical performance. The high stress twinning effect introduces a so far untapped strengthening and toughening mechanism, for enabling the design of high SFEs alloys with improved mechanical properties. Mechanical twinning is difficult to trigger in face centered cubic alloys with high stacking fault energies (SFEs) under standard tensile loading. Here, the authors report high stress twinning in a bulk compositionally complex steel of very high SFE, enhancing the material’s mechanical performance.
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Liu M, Wang P, Lu G, Huang CY, You Z, Wang CH, Yen HW. Deformation-activated recrystallization twin: New twinning path in pure aluminum enabled by cryogenic and rapid compression. iScience 2022; 25:104248. [PMID: 35573191 PMCID: PMC9093018 DOI: 10.1016/j.isci.2022.104248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 01/20/2022] [Accepted: 04/07/2022] [Indexed: 11/29/2022] Open
Abstract
Bulk aluminum rarely forms deformation or annealing twins owing to its high stacking fault energy. We report a novel twinning mechanism mediated by dynamic recrystallization in 6N pure aluminum under high strain rate (∼1.3 × 104 s−1) impact at a cryogenic temperature (77 K). Discontinuous dynamic recrystallization occurs during rapid severe plastic deformation and generates inhomogeneous microstructures exhibiting low-angle and high-angle grain boundaries. Unexpectedly, Σ3 twin boundaries were able to develop during dynamic recrystallization. Although these recrystallization twins have similar morphology as that of annealing twins, their formation relies on deformation activation instead of thermal activation, which was suppressed by the cryogenic experiment. Besides, strong orientation dependence was observed for formation of these novel twins. Beyond annealing and deformation twin, deformation-activated recrystallization twin is a new path for pure aluminum twinning. Deformation-activated recrystallization twin is enabled by cryogenic impact in pure Al This new twinning path occurs during discontinuous dynamic recrystallization Nucleation of these twinning grains prefers boundary edge and corner Occurrence of new twinning mechanism depends on deformation orientation
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Affiliation(s)
- Mao Liu
- School of Metallurgy, Northeastern University, Shenyang, 110819, China
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Pengfei Wang
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China
- Corresponding author
| | - Guoxing Lu
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
- Corresponding author
| | - Cheng-Yao Huang
- Department of Materials Science and Engineering, National Taiwan University, Roosevelt Road, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Zhong You
- Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK
| | - Chien-He Wang
- Department of Materials Science and Engineering, National Taiwan University, Roosevelt Road, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Hung-Wei Yen
- Department of Materials Science and Engineering, National Taiwan University, Roosevelt Road, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
- Corresponding author
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Zhan L, Wu M, Qin X. Research on homogeneous nucleation and microstructure evolution of aluminium alloy melt. ROYAL SOCIETY OPEN SCIENCE 2021; 8:210501. [PMID: 34457342 PMCID: PMC8371370 DOI: 10.1098/rsos.210501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/26/2021] [Indexed: 06/13/2023]
Abstract
In this paper, based on the embedded atom method (EAM) potential, molecular dynamics simulations of the solidification process of Al-4 at.%Cu alloy is carried out. The Al-Cu alloy melt is placed at different temperatures for isothermal solidification, and each stage of the entire solidification process is tracked, including homogeneous nucleation, nucleus growth, grain coarsening and microstructure evolution. In the nucleation stage, the transition from high temperature to low temperature manifests a change from spontaneous nucleation mode to divergent nucleation mode. The critical nucleation temperature of the Al-Cu alloy is determined to be about 0.42 T m (T m is the melting point of Al-4 at.%Cu) by calculating the nucleation rate and the crystal nucleus density. In the nucleus growth stage, two ways of growing up are observed, that is, a large crystal nucleus will absorb a smaller heterogeneous crystal nucleus, and two very close crystal nuclei will merge. In the microstructure evolution of the isothermally solidified Al-Cu alloy, it is emerged that the interior of all nanocrystalline grains are long-period stacking structure composed of face centred cubic (FCC) and hexagonal close-packed (HCP). These details provide important information for the production of Al-Cu binary alloy nano-polycrystalline products.
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Affiliation(s)
- Lan Zhan
- School of Materials Science and Engineering, Jiamusi University, 258th Xuefu Street, Xiangyang District, HeiLongJiang 154007, People's Republic of China
| | - Mingzhong Wu
- School of Materials Science and Engineering, Jiamusi University, 258th Xuefu Street, Xiangyang District, HeiLongJiang 154007, People's Republic of China
| | - Xiangge Qin
- School of Materials Science and Engineering, Jiamusi University, 258th Xuefu Street, Xiangyang District, HeiLongJiang 154007, People's Republic of China
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Li Q, Xue S, Price P, Sun X, Ding J, Shang Z, Fan Z, Wang H, Zhang Y, Chen Y, Wang H, Hattar K, Zhang X. Hierarchical nanotwins in single-crystal-like nickel with high strength and corrosion resistance produced via a hybrid technique. NANOSCALE 2020; 12:1356-1365. [PMID: 31854411 DOI: 10.1039/c9nr07472d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
High-density growth nanotwins enable high-strength and good ductility in metallic materials. However, twinning propensity is greatly reduced in metals with high stacking fault energy. Here we adopted a hybrid technique coupled with template-directed heteroepitaxial growth method to fabricate single-crystal-like, nanotwinned (nt) Ni. The nt Ni primarily contains hierarchical twin structures that consist of coherent and incoherent twin boundary segments with few conventional grain boundaries. In situ compression studies show the nt Ni has a high flow strength of ∼2 GPa and good deformability. Moreover, the nt Ni has superb corrosion behavior due to the unique twin structure in comparison to coarse grained and nanocrystalline counterparts. The hybrid technique opens the door for the fabrication of a wide variety of single-crystal-like nt metals with unique mechanical and chemical properties.
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Affiliation(s)
- Qiang Li
- School of Materials Engineering, Purdue University, West Lafayette, IN 47907, USA
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Abstract
Impact-induced erosion is the ablation of matter caused by being physically struck by another object. While this phenomenon is known, it is empirically challenging to study mechanistically because of the short timescales and small length scales involved. Here, we resolve supersonic impact erosion in situ with micrometer- and nanosecond-level spatiotemporal resolution. We show, in real time, how metallic microparticles (~10-μm) cross from the regimes of rebound and bonding to the more extreme regime that involves erosion. We find that erosion in normal impact of ductile metallic materials is melt-driven, and establish a mechanistic framework to predict the erosion velocity. Supersonic particle impacts can cause permanent damage to space vehicles and satellites, but how exactly remains unclear. Here, the authors visualise for the first time the high impact of single tin microparticles on a tin substrate and show erosion of ductile metallic materials is melt-driven.
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Zhang YF, Li Q, Xue SC, Ding J, Xie DY, Li J, Niu T, Wang H, Wang H, Wang J, Zhang X. Ultra-strong nanotwinned Al-Ni solid solution alloys with significant plasticity. NANOSCALE 2018; 10:22025-22034. [PMID: 30452036 DOI: 10.1039/c8nr05139a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Twin boundaries have been proven effective for strengthening metallic materials while maintaining plasticity. Al, however, has low twinning propensity due to its high stacking fault energy. Here we show, by using a small amount of Ni solutes, high-density twin boundaries and stacking faults in sputtered Al-Ni solid solution alloys. Density function theory calculations show that the Ni solute facilitates the formation of stacking faults and stabilizes nanotwins in Al-Ni solid solution alloys. In situ micropillar compression studies reveal a high flow stress (exceeding 1.7 GPa), comparable to high strength martensitic steels and Ni alloys. Furthermore, significant plasticity was observed in these nanotwinned Al-Ni alloy films due to the existence of high density twin boundaries and 9R phase.
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Affiliation(s)
- Y F Zhang
- School of Materials Engineering, Purdue University, West Lafayette, IN 47907, USA.
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Li Q, Xue S, Wang J, Shao S, Kwong AH, Giwa A, Fan Z, Liu Y, Qi Z, Ding J, Wang H, Greer JR, Wang H, Zhang X. High-Strength Nanotwinned Al Alloys with 9R Phase. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:1704629. [PMID: 29356130 DOI: 10.1002/adma.201704629] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 11/04/2017] [Indexed: 06/07/2023]
Abstract
Light-weight aluminum (Al) alloys have widespread applications. However, most Al alloys have inherently low mechanical strength. Nanotwins can induce high strength and ductility in metallic materials. Yet, introducing high-density growth twins into Al remains difficult due to its ultrahigh stacking-fault energy. In this study, it is shown that incorporating merely several atomic percent of Fe solutes into Al enables the formation of nanotwinned (nt) columnar grains with high-density 9R phase in Al(Fe) solid solutions. The nt Al-Fe alloy coatings reach a maximum hardness of ≈5.5 GPa, one of the strongest binary Al alloys ever created. In situ uniaxial compressions show that the nt Al-Fe alloys populated with 9R phase have flow stress exceeding 1.5 GPa, comparable to high-strength steels. Molecular dynamics simulations reveal that high strength and hardening ability of Al-Fe alloys arise mainly from the high-density 9R phase and nanoscale grain sizes.
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Affiliation(s)
- Qiang Li
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Sichuang Xue
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Jian Wang
- Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Shuai Shao
- Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Anthony H Kwong
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Adenike Giwa
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Zhe Fan
- Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA
| | - Yue Liu
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Zhimin Qi
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Jie Ding
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Han Wang
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Julia R Greer
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Haiyan Wang
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Xinghang Zhang
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
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