中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 力学研究所
  3. 中国科学院力学研究所
  4. 流固耦合系统力学重点实验室(2012-)
Mechanical responses and crystal plasticity model of CoCrNi medium-entropy alloy under ramp wave compression

文献类型：期刊论文

作者Dong, Jinlei3; Zhang, Xuping3; Wang, Guiji3; Wu, Xianqian2; Luo, Binqiang3; Chen, Xuemiao3; Tan, Fuli3; Zhao, Jianheng1; Sun, Chengwei3; Wu XQ(吴先前)
刊名MATTER AND RADIATION AT EXTREMES
出版日期2024-09-01
卷号9期号:5页码:16
ISSN号2468-2047
DOI10.1063/5.0206773
通讯作者Zhang, Xuping() ; Wang, Guiji()
英文摘要It is of substantial scientific significance and practical value to reveal and understand the multiscale mechanical properties and intrinsic mechanisms of medium-entropy alloys (MEAs) under high strain rates and pressures. In this study, the mechanical responses and deformation mechanisms of an equiatomic CoCrNi MEA are investigated utilizing magnetically driven ramp wave compression (RWC) with a strain rate of 10(5) s(-1). The CoCrNi MEA demonstrates excellent dynamic mechanical responses and yield strength under RWC compared with other advanced materials. Multiscale characterizations reveal that grain refinement and abundant micromechanisms, including dislocation slip, stacking faults, nanotwin network, and Lomer-Cottrell locks, collectively contribute to its excellent performance during RWC. Furthermore, dense deformation twins and shear bands intersect, forming a weave-like microstructure that can disperse deformation and enhance plasticity. On the basis of these observations, we develop a modified crystal plasticity model with coupled dislocation and twinning mechanisms, providing a relatively accurate quantitative description of the multiscale behavior under RWC. The results of simulations indicate that the activation of multilevel microstructures in CoCrNi MEA is primarily attributable to stress inhomogeneities and localized strain during RWC. Our research offers valuable insights into the dynamic mechanical responses of CoCrNi MEA, positioning it as a promising material for use under extreme dynamic conditions.
WOS关键词SHORT-RANGE ORDER ; HIGH-STRAIN ; HIGH-PRESSURE ; CONSTITUTIVE MODEL ; SHOCK COMPRESSION ; SHEAR BANDS ; DEFORMATION ; METALS ; TRANSITION ; EVOLUTION
资助项目National Natural Science Foundation of China[92166201] ; National Natural Science Foundation of China[12002327] ; National Natural Science Foundation of China[12272391]
WOS研究方向Physics
语种英语
WOS记录号WOS:001253493400001
资助机构National Natural Science Foundation of China
源URL[http://dspace.imech.ac.cn/handle/311007/95847]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者Zhang, Xuping; Wang, Guiji
作者单位1.China Acad Engn Phys, Inst Appl Elect, Mianyang 621999, Peoples R China
2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
3.China Acad Engn Phys, Inst Fluid Phys, Mianyang 621999, Peoples R China
推荐引用方式
GB/T 7714		 Dong, Jinlei,Zhang, Xuping,Wang, Guiji,et al. Mechanical responses and crystal plasticity model of CoCrNi medium-entropy alloy under ramp wave compression[J]. MATTER AND RADIATION AT EXTREMES,2024,9(5):16.
APA Dong, Jinlei.,Zhang, Xuping.,Wang, Guiji.,Wu, Xianqian.,Luo, Binqiang.,...&吴先前.(2024).Mechanical responses and crystal plasticity model of CoCrNi medium-entropy alloy under ramp wave compression.MATTER AND RADIATION AT EXTREMES,9(5),16.
MLA Dong, Jinlei,et al."Mechanical responses and crystal plasticity model of CoCrNi medium-entropy alloy under ramp wave compression".MATTER AND RADIATION AT EXTREMES 9.5(2024):16.

入库方式： OAI收割

来源：力学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。