| Plastic accommodation during tensile deformation of gradient structure | |
Wu XL(武晓雷)1,2 ; Yang MX(杨沐鑫)1; Li, Runguang3; Jiang P(姜萍)1; Yuan FP(袁福平)1,2; Wang, Yandong3; Zhu, Yuntian5; Wei, Yueguang4
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| Corresponding Author | Wu, Xiaolei([email protected]) ; Wang, Yandong([email protected]) ; Wei, Yueguang([email protected]) |
| Source Publication | SCIENCE CHINA-MATERIALS
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| 2021-01-05 | |
| Pages | 11 |
| ISSN | 2095-8226 |
| Abstract | 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. |
| Keyword | gradient structure plastic accommodation strain hardening nanostructure ductility |
| DOI | 10.1007/s40843-020-1545-2 |
| Indexed By | SCI ; EI ; CSCD |
| Language | 英语 |
| WOS ID | WOS:000607019900002 |
| WOS Keyword | RANGE INTERNAL-STRESSES ; RESIDUAL-STRESS ; STRAIN GRADIENT ; YIELD-POINT ; IF STEEL ; DUCTILITY ; GRAIN ; MICROSTRUCTURE ; DISLOCATION ; STRENGTH |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| Funding Project | 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] |
| Funding Organization | 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 |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Wu, Xiaolei ; Wang, Yandong ; Wei, Yueguang |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/85922 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China; 4.Peking Univ, Dept Mech & Engn Sci, Coll Engn, BIC ESAT, Beijing 100871, Peoples R China; 5.City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong, Peoples R China |
| Recommended Citation 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.Rp_Au:Wu, Xiaolei, Wang, Yandong, Wei, Yueguang |
| 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. |
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| Jp2021052.pdf（5051KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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