Strain hardenability of a gradient metallic alloy under high-strain-rate compressive loading
文献类型：期刊论文
| 作者 | Fan JT2; Jiang MQ(蒋敏强)1
|
| 刊名 | MATERIALS & DESIGN
 |
| 出版日期 | 2019-05-15 |
| 卷号 | 170页码:8 |
| 关键词 | Metallic alloy Gradient microstructure design Impact loading Strain hardening Rate dependency Dynamic fracture |
| ISSN号 | 0264-1275 |
| DOI | 10.1016/j.matdes.2019.107695 |
| 通讯作者 | Fan, Jitang(Jitang_fan@hotmail.com) |
| 英文摘要 | Subjected to an impact loading, metallic alloys usually display strain softening due to the highly localized shear deformation accompanied by temperature rise, which causes the decrease of resistance to an applied loading and even catastrophic failure. In this work, strain hardening under high-rate compressive loading is firstly achieved in a developed metallic alloy with the gradient microstructure of both phases and grain sizes. Mechanical responses at different compressive loading rates all show a unique strain hardening. Rate dependencies of yielding and strain hardening are revealed and illustrated by a modified Johnson-Cook constitutive model. Dynamic deformation and fracture are characterized as macroscopic shear with the shielded cracks. The inherent toughening mechanisms are indicated as gradient straining with phase transformation, twinning and dislocation tangling. This work demonstrates that the highly localized shear deformation accompanied by temperature rise can be prevented by the gradient microstructure with martensitic transformations, twinnings and dislocations. It is full of interest to create a feasible route of developing the strain hardenable metallic alloys under impact loadings via architecturing the gradient microstructure. (C) 2019 The Authors. Published by Elsevier Ltd. |
| 分类号 | 二类/Q1 |
| WOS关键词 | MECHANICAL-BEHAVIOR ; GLASS COMPOSITES ; CUZR MARTENSITE ; STRENGTH ; FRACTURE ; STEEL ; DEFORMATION ; PLASTICITY ; IMPACT ; DAMAGE |
| 资助项目 | Beijing Institute of Technology Research Fund Program for Young Scholars, China ; Independent Research Project of State Key Laboratory of Explosion Science and Technology, China[QNKT17-03] ; Fundamental Research Funds for the Central Universities, China ; National Natural Science Foundation of China, China[11602024] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000462900600004 |
| 资助机构 | Beijing Institute of Technology Research Fund Program for Young Scholars, China ; Independent Research Project of State Key Laboratory of Explosion Science and Technology, China ; Fundamental Research Funds for the Central Universities, China ; National Natural Science Foundation of China, China |
| 其他责任者 | Fan, Jitang |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/78934]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China 2.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Fan JT,Jiang MQ. Strain hardenability of a gradient metallic alloy under high-strain-rate compressive loading[J]. MATERIALS & DESIGN,2019,170:8. |
| APA | Fan JT,&蒋敏强.(2019).Strain hardenability of a gradient metallic alloy under high-strain-rate compressive loading.MATERIALS & DESIGN,170,8. |
| MLA | Fan JT,et al."Strain hardenability of a gradient metallic alloy under high-strain-rate compressive loading".MATERIALS & DESIGN 170(2019):8. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。