| Inter-zone constraint modifies the stress-strain response of the constituent layer in gradient structure | |
Wang, Yanfei1; Zhu, Yuntian2; Wu XL(武晓雷)3 ; Wei, Yueguang4; Huang, Chongxiang1
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| Corresponding Author | Zhu, Yuntian([email protected]) ; Huang, Chongxiang([email protected]) |
| Source Publication | SCIENCE CHINA-MATERIALS
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| 2021-07-19 | |
| Pages | 10 |
| ISSN | 2095-8226 |
| Abstract | How an individual constituent zone behaves during the deformation of a heterostructured metallic material is a fundamental issue for understanding heterostructure deformation, but it remains a challenge to experimentally observe it. Here we report a study on the stress-strain behavior of the nanostructured gradient layer (NGL) in an integrated gradient specimen that consists of a coarse-grained (CG) central layer sandwiched between two NGLs. Constraint from the CG central layer led to the formation of dense and dispersed stable strain bands (SBs) in the NGL, which regained dislocation hardening after initial recovery and grain coarsening. Consequently, the NGL exhibited a transient plateau of flow stress after yielding, and then regained extra strain hardening to achieve excellent uniform elongation. These unique behaviors are dramatically different from those of a freestanding NGL, indicating a fundamentally different deformation principle that is intrinsic to heterostructures, i.e., inter-zone constraint modifies the constitutive behavior of constituent zones. |
| Keyword | heterogeneous structure nanostructure stress-strain response strain bands strength and ductility |
| DOI | 10.1007/s40843-021-1702-2 |
| Indexed By | SCI ; EI ; CSCD |
| Language | 英语 |
| WOS ID | WOS:000678060000001 |
| WOS Keyword | BACK STRESS ; MECHANICAL-PROPERTIES ; SHEAR BANDS ; DUCTILITY ; DEFORMATION ; STRENGTH ; PLASTICITY |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| Funding Project | National Natural Science Foundation of China (NSFC)[51931003] ; China Postdoctoral Science Foundation[2020M680223] ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; Chinese Academy of Sciences[XDB22040503] ; National Key R&D Program of China[2017YFA0204403] |
| Funding Organization | National Natural Science Foundation of China (NSFC) ; China Postdoctoral Science Foundation ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; Chinese Academy of Sciences ; National Key R&D Program of China |
| Classification | 二类/Q1 |
| Ranking | 3 |
| Contributor | Zhu, Yuntian ; Huang, Chongxiang |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/87162 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Sichuan Univ, Sch Aeronaut & Astronaut, Chengdu 610065, Peoples R China; 2.City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 4.Peking Univ, Coll Engn, Dept Mech & Engn Sci, Beijing 100871, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Yanfei,Zhu, Yuntian,Wu XL,et al. Inter-zone constraint modifies the stress-strain response of the constituent layer in gradient structure[J]. SCIENCE CHINA-MATERIALS,2021:10.Rp_Au:Zhu, Yuntian, Huang, Chongxiang |
| APA | Wang, Yanfei,Zhu, Yuntian,武晓雷,Wei, Yueguang,&Huang, Chongxiang.(2021).Inter-zone constraint modifies the stress-strain response of the constituent layer in gradient structure.SCIENCE CHINA-MATERIALS,10. |
| MLA | Wang, Yanfei,et al."Inter-zone constraint modifies the stress-strain response of the constituent layer in gradient structure".SCIENCE CHINA-MATERIALS (2021):10. |
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| Jp2021F347.pdf（2969KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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