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Zhang D, Liu W, Li Y, Sun D, Wu Y, Luo S, Chen S, Tao Y, Zhang B. In situ observation of crystal rotation in Ni-based superalloy during additive manufacturing process. Nat Commun 2023; 14:2961. [PMID: 37221206 DOI: 10.1038/s41467-023-38727-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 05/12/2023] [Indexed: 05/25/2023] Open
Abstract
Understanding the dynamic process of epitaxial microstructure forming in laser additive manufacturing is very important for achieving products with a single crystalline texture. Here, we perform in situ, real-time synchrotron Laue diffraction experiments to capture the microstructural evolution of nickel-based single-crystal superalloys during the rapid laser remelting process. In situ synchrotron radiation Laue diffraction characterises the crystal rotation behaviour and stray grain formation process. With a complementary thermomechanical coupled finite element simulation and molecular dynamics simulation, we identify that the crystal rotation is governed by the localised heating/cooling heterogeneity-induced deformation gradient and recognise that the sub-grain rotation caused by rapid dislocation movement could be the origin of granular stray grains at the bottom of the melt pool.
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Affiliation(s)
- Dongsheng Zhang
- Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing, 100049, P R China
- University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, P R China
| | - Wei Liu
- 3D Printing Research & Engineering Technology Center, AECC Beijing Institute of Aeronautical Materials, Beijing, 100095, P R China
| | - Yuxiao Li
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan, 610207, P R China
| | - Darui Sun
- Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing, 100049, P R China
| | - Yu Wu
- 3D Printing Research & Engineering Technology Center, AECC Beijing Institute of Aeronautical Materials, Beijing, 100095, P R China
| | - Shengnian Luo
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan, 610207, P R China
| | - Sen Chen
- Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan, 621900, China.
| | - Ye Tao
- Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing, 100049, P R China.
| | - Bingbing Zhang
- Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing, 100049, P R China.
- University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, P R China.
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Henningsson A, Hall SA. xrd_simulator: 3D X-ray diffraction simulation software supporting 3D polycrystalline microstructure morphology descriptions. J Appl Crystallogr 2023; 56:282-292. [PMID: 36777138 PMCID: PMC9901924 DOI: 10.1107/s1600576722011001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 11/16/2022] [Indexed: 12/24/2022] Open
Abstract
An open source Python package named xrd_simulator, capable of simulating geometrical interactions between a monochromatic X-ray beam and a polycrystalline microstructure, is described and demonstrated. The software can simulate arbitrary intragranular lattice variations of single crystals embedded within a multiphase 3D aggregate by making use of a tetrahedral mesh representation where each element holds an independent lattice. By approximating the X-ray beam as an arbitrary convex polyhedral region in space and letting the sample be moved continuously through arbitrary rigid motions, data from standard and non-standard measurement sequences can be simulated. This implementation is made possible through analytical solutions to a modified, time-dependent version of the Laue equations. The software, which primarily targets three-dimensional X-ray diffraction microscopy (high-energy X-ray diffraction microscopy) type experiments, enables the numerical exploration of which sample quantities can and cannot be reconstructed for a given acquisition scheme. Similarly, xrd_simulator targets investigations of different measurement sequences in relation to optimizing both experimental run times and sampling.
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Affiliation(s)
- Axel Henningsson
- Div. Solid Mechanics, Lund University, Ole Römers väg 1, Lund, Sweden,Correspondence e-mail:
| | - Stephen A. Hall
- Div. Solid Mechanics, Lund University, Ole Römers väg 1, Lund, Sweden
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Kanagasabapathy M, Sekar R. Textural and electrochemical analysis of galvanostatically fabricated nano Mn0.2-0.4xFe0.5-0.7xSx@rGO/Cu(200) composite films for hybrid supercapacitor electrodes. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zhang YY, Li YX, Fan D, Zhang NB, Huang JW, Tang MX, Cai Y, Zeng XL, Sun T, Fezzaa K, Chen S, Luo SN. Ultrafast X-Ray Diffraction Visualization of B1-B2 Phase Transition in KCl under Shock Compression. PHYSICAL REVIEW LETTERS 2021; 127:045702. [PMID: 34355975 DOI: 10.1103/physrevlett.127.045702] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 03/15/2021] [Accepted: 06/25/2021] [Indexed: 06/13/2023]
Abstract
The classical B1(NaCl)↔B2(CsCl) transitions have been considered as a model for general structural phase transformations, and resolving corresponding phase transition mechanisms under high strain rate shock compression is critical to a fundamental understanding of phase transition dynamics. Here, we use subnanosecond synchrotron x-ray diffraction to visualize the lattice response of single-crystal KCl to planar shock compression. Complete B1-B2 orientation relations are revealed for KCl under shock compression along ⟨100⟩_{B1} and ⟨110⟩_{B1}; the orientation relations and transition mechanisms are anisotropic and can be described with the standard and modified Watanabe-Tokonami-Morimoto model, respectively, both involving interlayer sliding and intralayer ion rearrangement. The current study also establishes a paradigm for investigating solid-solid phase transitions under dynamic extremes with ultrafast synchrotron x-ray diffraction.
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Affiliation(s)
- Y Y Zhang
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610207, People's Republic of China
| | - Y X Li
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610207, People's Republic of China
| | - D Fan
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610207, People's Republic of China
| | - N B Zhang
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610207, People's Republic of China
| | - J W Huang
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610207, People's Republic of China
| | - M X Tang
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610207, People's Republic of China
| | - Y Cai
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610207, People's Republic of China
| | - X L Zeng
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610207, People's Republic of China
| | - T Sun
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - K Fezzaa
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - S Chen
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610207, People's Republic of China
| | - S N Luo
- School of Materials Science and Engineering and School of Physical Science and Technology, Southwest Jiaotong University, Chengdu, Sichuan 610031, People's Republic of China
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