IMECH-IR  > 非线性力学国家重点实验室
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)
Corresponding AuthorWang, Yan-Dong(ydwang@ustb.edu.cn) ; Zhu, Yun-Tian(ytzhu@ncsu.edu) ; Wu, Xiao-Lei(xlwu@imech.ac.cn)
Source PublicationMATERIALS RESEARCH LETTERS
2019
Volume7Issue:11Pages:433-438
ISSN2166-3831
AbstractResidual 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.
KeywordResidual stress hetero-deformation induced stress strain hardening nanostructure
DOI10.1080/21663831.2019.1635537
Indexed BySCI
Language英语
WOS IDWOS:000482364900001
WOS KeywordSTAINLESS-STEEL ; DEFORMATION ; PLASTICITY
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
Funding ProjectNational 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 OrganizationNational 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
Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/80022
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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