Residual stress provides significant strengthening and ductility in gradient structured materials

doi:10.1080/21663831.2019.1635537

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	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)
通讯作者	Wang, Yan-Dong(ydwang@ustb.edu.cn) ; Zhu, Yun-Tian(ytzhu@ncsu.edu) ; Wu, Xiao-Lei(xlwu@imech.ac.cn)
发表期刊	MATERIALS RESEARCH LETTERS
	2019
卷号	7 期号:11 页码:433-438
ISSN	2166-3831
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. [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.
关键词	Residual stress hetero-deformation induced stress strain hardening nanostructure
DOI	10.1080/21663831.2019.1635537
收录类别	SCI
语种	英语
WOS记录号	WOS:000482364900001
关键词[WOS]	STAINLESS-STEEL ; DEFORMATION ; PLASTICITY
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
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
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
论文分区	一类
力学所作者排名	1
RpAuthor	Wang, Yan-Dong ; Zhu, Yun-Tian ; Wu, Xiao-Lei
引用统计	被引频次：64[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/80021
专题	非线性力学国家重点实验室
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.
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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