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The Evolution of Strain Gradient and Anisotropy in Gradient-Structured Metal
Bian XD(卞祥德); Yuan FP(袁福平); Wu XL(武晓雷); Zhu, Yuntian; Yuan, FP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
发表期刊METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
2017-09-01
卷号48A期号:9页码:3951-3960
ISSN1073-5623
摘要Gradient-structured metals have been reported to possess superior mechanical properties, which were attributed to their mechanical heterogeneity. Here we report in-situ observation of the evolution of strain gradient and anisotropy during tensile testing of a gradient-structured metal. Strain gradients and anisotropy in the lateral directions were observed to increase with increasing applied tensile strain. In addition, the equivalent Poisson's ratio showed gradient, which evolved with applied strain. The gradient structure produced higher deformation anisotropy than coarse-grained homogeneous structure, and the anisotropy increased with increasing tensile strain. The strain gradient and anisotropy resulted in strong back-stress hardening, large strain gradients, and a high density of geometrically necessary dislocations, which helped with increasing the ductility.
DOI10.1007/s11661-017-4199-2
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收录类别SCI ; EI
语种英语
WOS记录号WOS:000406486700002
关键词[WOS]SEVERE PLASTIC-DEFORMATION ; MECHANICAL-PROPERTIES ; NANOCRYSTALLINE MATERIALS ; TENSILE DUCTILITY ; MAXIMUM STRENGTH ; STAINLESS-STEEL ; BAUSCHINGER ; ALLOYS ; COPPER
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
项目资助者NSFC(11472286 ; 973 Program of China(2012CB932203 ; 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 ; 11572328 ; 2012CB937500) ; 11672313)
课题组名称LNM材料介观力学性能的表征
论文分区二类
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/70020
专题非线性力学国家重点实验室
通讯作者Yuan, FP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
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GB/T 7714
Bian XD,Yuan FP,Wu XL,et al. The Evolution of Strain Gradient and Anisotropy in Gradient-Structured Metal[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2017,48A(9):3951-3960.
APA 卞祥德,袁福平,武晓雷,Zhu, Yuntian,&Yuan, FP .(2017).The Evolution of Strain Gradient and Anisotropy in Gradient-Structured Metal.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,48A(9),3951-3960.
MLA 卞祥德,et al."The Evolution of Strain Gradient and Anisotropy in Gradient-Structured Metal".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 48A.9(2017):3951-3960.
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