| Residual stress provides significant strengthening and ductility in gradient structured materials | |
Yang MX(杨沐鑫) ; Li, RG; Jiang P(姜萍); Yuan FP(袁福平); Wang, YD; Zhu, YT; Wu XL(武晓雷)
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| Corresponding Author | Wang, Yan-Dong(ydwang@ustb.edu.cn) ; Zhu, Yun-Tian(ytzhu@ncsu.edu) ; Wu, Xiao-Lei(xlwu@imech.ac.cn) |
| Source Publication | MATERIALS RESEARCH LETTERS
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| 2019 | |
| Volume | 7Issue:11Pages:433-438 |
| ISSN | 2166-3831 |
| Abstract | Residual stress exists extensively in biological and engineering structures. Here we report that residual stress can be engineered to significantly enhance the strength and ductility of gradient materials. In-situ synchrotron experiments revealed that the strongest strain hardening occurred in the layer with the highest compressive residual stress in a gradient structure. This layer remained elastic longer than adjacent layers during tension, producing high hetero-deformation induced stress to increase strength and enhancing work hardening even after the disappearance of the compressive stress to increase ductility. This finding provides a new paradigm for designing gradient structures for superior mechanical properties. [GRAPHICS] . IMPACT STATEMENT We show that compressive residual stress layer in SMAT-processed gradient material produces hetero-deformation induced hardening, which played a major role in improving strength and ductility. |
| Keyword | Residual stress hetero-deformation induced stress strain hardening nanostructure |
| DOI | 10.1080/21663831.2019.1635537 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000482364900001 |
| WOS Keyword | STAINLESS-STEEL ; DEFORMATION ; PLASTICITY |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| Funding Project | National Key R&D Program of China[2017YFA0204402/3] ; National Natural Science Foundation of China[11572328] ; National Natural Science Foundation of China[11672313] ; National Natural Science Foundation of China[11790293] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503] ; US Army Research Office[W911 NF-12-1-0009] ; US National Science Foundation[DMT-1104667] ; Nanjing University of Science and Technology |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; US Army Research Office ; US National Science Foundation ; Nanjing University of Science and Technology |
| Classification | 一类 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/80021 |
| Collection | 非线性力学国家重点实验室 |
| Recommended Citation GB/T 7714 | Yang MX,Li, RG,Jiang P,et al. Residual stress provides significant strengthening and ductility in gradient structured materials[J]. MATERIALS RESEARCH LETTERS,2019,7(11):433-438. |
| APA | 杨沐鑫.,Li, RG.,姜萍.,袁福平.,Wang, YD.,...&武晓雷.(2019).Residual stress provides significant strengthening and ductility in gradient structured materials.MATERIALS RESEARCH LETTERS,7(11),433-438. |
| MLA | 杨沐鑫,et al."Residual stress provides significant strengthening and ductility in gradient structured materials".MATERIALS RESEARCH LETTERS 7.11(2019):433-438. |
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