| 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 |
| ISSN | 1073-5623
|
| 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. |
| DOI | 10.1007/s11661-017-4199-2
|
| URL | 查看原文
|
| 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. |
推荐引用方式
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.
|
修改评论