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Ductility by shear band delocalization in the nano-layer of gradient structure
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
Corresponding AuthorZhu, Yuntian(ytzhu@ncsu.edu) ; Wu, Xiaolei(xlwu@imech.ac.cn)
Source PublicationMATERIALS RESEARCH LETTERS
2019
Volume7Issue:1Pages:12-17
ISSN2166-3831
AbstractNanostructured (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]
KeywordGradient structure ductility shear band strain delocalization back-stress hardening
DOI10.1080/21663831.2018.1546238
Indexed BySCI ; SCI
Language英语
WOS IDWOS:000463802000002
WOS KeywordHIGH-STRENGTH ; DEFORMATION ; DISLOCATION ; PLASTICITY ; METALS
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
Funding ProjectNational 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]
Funding OrganizationNational 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
Classification一类
Ranking1
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78332
Collection非线性力学国家重点实验室
Recommended Citation
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.
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