Cooperative dislocations for pressure-dependent sequential deformation of multi-principal element alloys under shock loading

doi:10.1016/j.actamat.2024.120150

IMR OpenIR

	Cooperative dislocations for pressure-dependent sequential deformation of multi-principal element alloys under shock loading
	Zhang, Fan 1,2,3,4; Ren, Yu 5; Pei, Zongrui 6; Gao, Qingyang 1; Lu, Zhen 4,7; Wang, Benpeng 1; Xue, Yunfei 1; Cao, Xumeng 8; Du, Kui 8; Yang, Yang 9; Li, Bin 10; Cheng, Xingwang 1; Chen, Mingwei 2,3,11,12
通讯作者	Cheng, Xingwang(chengxw@bit.edu.cn) ; Chen, Mingwei(chenmw@sustech.edu.cn)
	2024-09-01
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	276 页码:12
摘要	Multi-principal element alloys (MPEAs) are promising materials for structural applications under extreme conditions. Their outstanding mechanical properties are closely related to the activation of multiple deformation modes of dislocation gliding, twinning, and phase transformation that appear in sequence during deformation at low temperatures, high pressures, or high strain rates. However, the inherent correlations among these deformation modes and, thus, underlying deformation mechanisms of MPEAs remain largely unknown. We report softrecovery plate impact experiments of face-centered-cubic (FCC) CrCoNi MPEAs, demonstrating pressuredependent deformation modes from low-pressure stacking faults to medium-pressure twinning and highpressure FCC to hexagonal-close-packed (HCP) phase transformation. Atomic-scale characterizations unveil that the sequential deformation is manipulated by the cooperation of 90 degrees and 30 degrees Shockley partial dislocations at deformation fronts, which is facilitated by low stacking fault energy and pressure-dependent phase stability of the MPEAs. Moreover, the cooperative dislocation behavior can also be observed at twin fronts of shock-loaded CrMnFeCoNi MPEA, validating the universality of the cooperative deformation mode in FCC alloys with a low stacking fault energy. Theoretical analyses suggest that the distinctive cooperative dislocation behavior results in the self-compensation of dislocation strain fields and the minimization of interfacial elastic energy at incoherent twin and FCC/HCP interfaces.
关键词	Multi-principal element alloys Cooperative dislocations Soft-recovery shock loading experiment Deformation twins Shock-induced phase transformation
资助者	US National Science Foundation ; National Natural Science Foundation of China ; National Key R & D Program of China ; National Key Laboratory Foundation of Science and Technology on Materials under Shock and Impact ; MEXT, Japan ; China Postdoctoral Science Foundation ; SUSTech
DOI	10.1016/j.actamat.2024.120150
收录类别	SCI
语种	英语
资助项目	US National Science Foundation[NSF DMR- 1804320] ; National Natural Science Foundation of China[52271141] ; National Natural Science Foundation of China[52331006] ; National Key R & D Program of China[2021YFB3802900] ; National Key Laboratory Foundation of Science and Technology on Materials under Shock and Impact[WDZC2022-1] ; MEXT, Japan ; China Postdoctoral Science Foundation[2021M690012] ; SUSTech[G03050K002]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001266437300001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/187999
专题	中国科学院金属研究所
通讯作者	Cheng, Xingwang; Chen, Mingwei
作者单位	1.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China 2.Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA 3.Johns Hopkins Univ, Hopkins Extreme Mat Inst, Baltimore, MD 21218 USA 4.Tohoku Univ, WPI Adv Inst Mat Res, Sendai 9808577, Japan 5.North China Elect Power Univ, Sch Energy Power & Mech Engn, Beijing 102206, Peoples R China 6.Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA 7.AIST, Math Adv Mat Open Innovat Lab, Sendai 9808577, Japan 8.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 9.Univ Nevada, Dept Chem & Mat Engn, Reno, NV 89557 USA 10.Iowa State Univ, Dept Ind & Mfg Syst Engn, Ames, IA 50011 USA 11.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China 12.Southern Univ Sci & Technol, Inst Innovat Mat, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Fan,Ren, Yu,Pei, Zongrui,et al. Cooperative dislocations for pressure-dependent sequential deformation of multi-principal element alloys under shock loading[J]. ACTA MATERIALIA,2024,276:12.
APA	Zhang, Fan.,Ren, Yu.,Pei, Zongrui.,Gao, Qingyang.,Lu, Zhen.,...&Chen, Mingwei.(2024).Cooperative dislocations for pressure-dependent sequential deformation of multi-principal element alloys under shock loading.ACTA MATERIALIA,276,12.
MLA	Zhang, Fan,et al."Cooperative dislocations for pressure-dependent sequential deformation of multi-principal element alloys under shock loading".ACTA MATERIALIA 276(2024):12.