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. 非线性力学国家重点实验室
Plastic accommodation during tensile deformation of gradient structure

文献类型：期刊论文

作者Wu XL(武晓雷)4,5; Yang MX(杨沐鑫)5; Li, Runguang3; Jiang P(姜萍)5; Yuan FP(袁福平)4,5; Wang, Yandong3; Zhu, Yuntian1; Wei, Yueguang2
刊名SCIENCE CHINA-MATERIALS
出版日期2021-01-05
页码11
关键词gradient structure plastic accommodation strain hardening nanostructure ductility
ISSN号2095-8226
DOI10.1007/s40843-020-1545-2
通讯作者Wu, Xiaolei(xlwu@imech.ac.cn) ; Wang, Yandong(ydwang@bust.edu.cn) ; Wei, Yueguang(weiyg@pku.edu.cn)
英文摘要Gradient structure (GS) possesses a typical trans-scale grain hierarchy with varying internal plastic stability, and the mutual plastic accommodation plays a crucial role in its superior strength-ductility combination. Using the in-situ synchrotron X-ray diffraction (XRD) during tensile loading, we measured lattice strains sequentially from the nanostructured (NS) surface layer to the central coarsegrained (CG) layer to elucidate when and how plastic accommodation occurs and evolves within the GS, along with their roles in plastic deformation and strain hardening. Throughout the tensile deformation, two types of plastic incompatibility occur in the GS. One is an extended elastoplastic transition due to layer-by-layer yielding. The other is strain localization and softening in the NS layer, in contrast with the stable plastic deformation in the CG layer. Plastic accommodation thus occurs concurrently and manifests as both an inter-layer and intra-layer change of stress state throughout tensile deformation. This produces different micromechanical responses between layers. Specifically, the NS layer initially experiences strain hardening followed by an elastoplastic deformation. The hetero-deformation induced hardening, along with forest hardening, facilitates a sustainable tensile strain in the NS layer, comparable to that in the CG layer.
分类号二类/Q1
WOS关键词RANGE INTERNAL-STRESSES ; RESIDUAL-STRESS ; STRAIN GRADIENT ; YIELD-POINT ; IF STEEL ; DUCTILITY ; GRAIN ; MICROSTRUCTURE ; DISLOCATION ; STRENGTH
资助项目Ministry of Science and Technology, China[2017YFA0204402] ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; National Natural Science Foundation of China[11972350] ; National Natural Science Foundation of China[11890680] ; Chinese Academy of Sciences[XDB22040503]
WOS研究方向Materials Science
语种英语
WOS记录号WOS:000607019900002
资助机构Ministry of Science and Technology, China ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; National Natural Science Foundation of China ; Chinese Academy of Sciences
其他责任者Wu, Xiaolei ; Wang, Yandong ; Wei, Yueguang
源URL[http://dspace.imech.ac.cn/handle/311007/85921]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong, Peoples R China
2.Peking Univ, Dept Mech & Engn Sci, Coll Engn, BIC ESAT, Beijing 100871, Peoples R China;
3.Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China;
4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
5.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Wu XL,Yang MX,Li, Runguang,et al. Plastic accommodation during tensile deformation of gradient structure[J]. SCIENCE CHINA-MATERIALS,2021:11.
APA 武晓雷.,杨沐鑫.,Li, Runguang.,姜萍.,袁福平.,...&Wei, Yueguang.(2021).Plastic accommodation during tensile deformation of gradient structure.SCIENCE CHINA-MATERIALS,11.
MLA 武晓雷,et al."Plastic accommodation during tensile deformation of gradient structure".SCIENCE CHINA-MATERIALS (2021):11.

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。