| 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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| 通讯作者 | Wang, Yan-Dong([email protected])
; Zhu, Yun-Tian([email protected])
; Wu, Xiao-Lei([email protected])
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| 发表期刊 | MATERIALS RESEARCH LETTERS
 |
| 2019
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| 卷号 | 7期号:11页码:433-438 |
| ISSN | 2166-3831
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| 摘要 | 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.
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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. |
| 关键词 | Residual stress
hetero-deformation induced stress
strain hardening
nanostructure
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| DOI | 10.1080/21663831.2019.1635537
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| 收录类别 | SCI
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| 语种 | 英语
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| WOS记录号 | WOS:000482364900001
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| 关键词[WOS] | STAINLESS-STEEL
; DEFORMATION
; PLASTICITY
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| WOS研究方向 | Materials Science
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| WOS类目 | Materials Science, Multidisciplinary
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| 资助项目 | 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
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| 项目资助者 | 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
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| 论文分区 | 一类
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| 力学所作者排名 | 1
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| RpAuthor | Wang, Yan-Dong
; Zhu, Yun-Tian
; Wu, Xiao-Lei
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/80021
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| 专题 | 非线性力学国家重点实验室
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推荐引用方式
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.Rp_Au:Wang, Yan-Dong, Zhu, Yun-Tian, Wu, Xiao-Lei
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| 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.
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| 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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