Microstructural evolution of FeCoNiCrMn high-entropy alloy subjected to laser shock peening: Molecular dynamics simulation study
Molecular dynamics (MD) and Monte Carlo (MC) simulations are used to study the microstructural evolution of FeCoNiCrMn high-entropy alloys (HEA) after laser shock peening (LSP). The shock wave structure, microstructure, and dislocation evolution of single-crystal HEA after LSP are investigated at di...
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Elsevier
2025-04-01
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| Series: | Next Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949822825000413 |
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| author | Weizhou Xu Yongxiang Geng Haizhong Zheng Yixin Xiao |
| author_facet | Weizhou Xu Yongxiang Geng Haizhong Zheng Yixin Xiao |
| author_sort | Weizhou Xu |
| collection | DOAJ |
| description | Molecular dynamics (MD) and Monte Carlo (MC) simulations are used to study the microstructural evolution of FeCoNiCrMn high-entropy alloys (HEA) after laser shock peening (LSP). The shock wave structure, microstructure, and dislocation evolution of single-crystal HEA after LSP are investigated at different shock velocities and shock directions. The elastic-plastic wave segregation of single-crystal HEA is observed at [110] crystal-direction shock. The cold fusion occurs in [110] and [111] crystal directions. After [001] grain direction shock, mainly the Hexagonal close-packed(HCP) phase is produced. The [110] and [111] grain directions mostly produce disordered structures aftershock. Lower-density dislocations are produced in the short-range ordered (SRO) model. A more complex microstructural evolution exists in nanocrystalline HEA due to the strong anisotropy of single-crystal HEA. A large number of stacking faults (SFs), twins, Hirth dislocation locks, and Lomer-Cottrell lock (LC) structures are generated. At the same time, nanocrystalline HEA produces a large number of dislocation entanglements near grain boundaries, leading to the precipitation of a large number of subgrains. |
| format | Article |
| id | doaj-art-97fd2b4ec0b44ede92e44f564a49ec5e |
| institution | Kabale University |
| issn | 2949-8228 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Next Materials |
| spelling | doaj-art-97fd2b4ec0b44ede92e44f564a49ec5e2025-02-09T05:01:51ZengElsevierNext Materials2949-82282025-04-017100523Microstructural evolution of FeCoNiCrMn high-entropy alloy subjected to laser shock peening: Molecular dynamics simulation studyWeizhou Xu0Yongxiang Geng1Haizhong Zheng2Yixin Xiao3Nanchang Key Laboratory of Advanced Laser Surface Treatment for Wear-resistant Components, Nanchang Hangkong University, Jiangxi 330063, China; School of Material Science and Engineering, Nanchang Hangkong University, Jiangxi 330063, ChinaNanchang Key Laboratory of Advanced Laser Surface Treatment for Wear-resistant Components, Nanchang Hangkong University, Jiangxi 330063, China; School of Material Science and Engineering, Nanchang Hangkong University, Jiangxi 330063, ChinaNanchang Key Laboratory of Advanced Laser Surface Treatment for Wear-resistant Components, Nanchang Hangkong University, Jiangxi 330063, China; School of Material Science and Engineering, Nanchang Hangkong University, Jiangxi 330063, China; Corresponding author at: Nanchang Key Laboratory of Advanced Laser Surface Treatment for Wear-resistant Components, Nanchang Hangkong University, Jiangxi 330063, China.Nanchang Key Laboratory of Advanced Laser Surface Treatment for Wear-resistant Components, Nanchang Hangkong University, Jiangxi 330063, China; School of Material Science and Engineering, Nanchang Hangkong University, Jiangxi 330063, ChinaMolecular dynamics (MD) and Monte Carlo (MC) simulations are used to study the microstructural evolution of FeCoNiCrMn high-entropy alloys (HEA) after laser shock peening (LSP). The shock wave structure, microstructure, and dislocation evolution of single-crystal HEA after LSP are investigated at different shock velocities and shock directions. The elastic-plastic wave segregation of single-crystal HEA is observed at [110] crystal-direction shock. The cold fusion occurs in [110] and [111] crystal directions. After [001] grain direction shock, mainly the Hexagonal close-packed(HCP) phase is produced. The [110] and [111] grain directions mostly produce disordered structures aftershock. Lower-density dislocations are produced in the short-range ordered (SRO) model. A more complex microstructural evolution exists in nanocrystalline HEA due to the strong anisotropy of single-crystal HEA. A large number of stacking faults (SFs), twins, Hirth dislocation locks, and Lomer-Cottrell lock (LC) structures are generated. At the same time, nanocrystalline HEA produces a large number of dislocation entanglements near grain boundaries, leading to the precipitation of a large number of subgrains.http://www.sciencedirect.com/science/article/pii/S2949822825000413Laser shock peeningHigh-entropy alloyMolecular dynamicsOrientation dependenceMicrostructure |
| spellingShingle | Weizhou Xu Yongxiang Geng Haizhong Zheng Yixin Xiao Microstructural evolution of FeCoNiCrMn high-entropy alloy subjected to laser shock peening: Molecular dynamics simulation study Next Materials Laser shock peening High-entropy alloy Molecular dynamics Orientation dependence Microstructure |
| title | Microstructural evolution of FeCoNiCrMn high-entropy alloy subjected to laser shock peening: Molecular dynamics simulation study |
| title_full | Microstructural evolution of FeCoNiCrMn high-entropy alloy subjected to laser shock peening: Molecular dynamics simulation study |
| title_fullStr | Microstructural evolution of FeCoNiCrMn high-entropy alloy subjected to laser shock peening: Molecular dynamics simulation study |
| title_full_unstemmed | Microstructural evolution of FeCoNiCrMn high-entropy alloy subjected to laser shock peening: Molecular dynamics simulation study |
| title_short | Microstructural evolution of FeCoNiCrMn high-entropy alloy subjected to laser shock peening: Molecular dynamics simulation study |
| title_sort | microstructural evolution of feconicrmn high entropy alloy subjected to laser shock peening molecular dynamics simulation study |
| topic | Laser shock peening High-entropy alloy Molecular dynamics Orientation dependence Microstructure |
| url | http://www.sciencedirect.com/science/article/pii/S2949822825000413 |
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