Ductility by shear band delocalization in the nano-layer of gradient structure
文献类型：期刊论文
| 作者 | Yuan FP(袁福平) ; Yan DS(严定舜); Sun JD(孙将达); Zhou LL(周玲玲); Zhu YT;武晓雷
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| 刊名 | MATERIALS RESEARCH LETTERS
 |
| 出版日期 | 2019 |
| 卷号 | 7期号:1页码:12-17 |
| 关键词 | Gradient structure ductility shear band strain delocalization back-stress hardening |
| ISSN号 | 2166-3831 |
| DOI | 10.1080/21663831.2018.1546238 |
| 通讯作者 | Zhu, Yuntian(ytzhu@ncsu.edu) ; Wu, Xiaolei(xlwu@imech.ac.cn) |
| 英文摘要 | Nanostructured (NS) metals typically fail soon after yielding, starting with the formation of narrow shear bands. Here we report the observation of shear band delocalization in gradient metals. Shear bands were nucleated and delocalized in the NS layers by propagating along the gage length soon after yielding, converting the shear band into a localized strain zone (LSZ). Synergistic work hardening was developed in the LSZ by regaining dislocation hardening capability, and by back-stress hardening from the strain gradients in the axial and depth directions, which helped with enhancing global ductility. [GRAPHICS] |
| 分类号 | 一类 |
| WOS关键词 | HIGH-STRENGTH ; DEFORMATION ; DISLOCATION ; PLASTICITY ; METALS |
| 资助项目 | National Key Basic Research Program of China[2017YFA 0204402] ; National Key Basic Research Program of China[2017YFA0204403] ; National Natural Science Foundation of China (NSFC)[11472286] ; National Natural Science Foundation of China (NSFC)[11572328] ; National Natural Science Foundation of China (NSFC)[11672313] ; National Natural Science Foundation of China (NSFC)[11790293] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503] ; US Army Research Office[W911 NF-12-1-0009] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000463802000002 |
| 资助机构 | National Key Basic Research Program of China ; National Natural Science Foundation of China (NSFC) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; US Army Research Office |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/78332]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yuan FP,Yan DS,Sun JD,et al. Ductility by shear band delocalization in the nano-layer of gradient structure[J]. MATERIALS RESEARCH LETTERS,2019,7(1):12-17. |
| APA | Yuan FP,Yan DS,Sun JD,Zhou LL,&Zhu YT；武晓雷.(2019).Ductility by shear band delocalization in the nano-layer of gradient structure.MATERIALS RESEARCH LETTERS,7(1),12-17. |
| MLA | Yuan FP,et al."Ductility by shear band delocalization in the nano-layer of gradient structure".MATERIALS RESEARCH LETTERS 7.1(2019):12-17. |
入库方式： OAI收割
来源：力学研究所
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