| Grain Refinement of Pure Ti During Plastic Deformation |
| Wu S ; Fan K; Jiang P; Chen SH(陈少华); Wu, S (reprint author), Renmin Univ China, High Sch, 37 Zhongguancun St, Beijing 100080, Peoples R China.
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| 发表期刊 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
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| 2010
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| 卷号 | 527期号:26页码:6917-6921 |
| ISSN | 0921-5093
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| 摘要 | The mechanism of grain refinement was studied in titanium subjected to high-rate surface mechanical attrition treatment. By cross-sectional transmission electron microscopy, the deformation structures were systematically characterized in a nanocrystalline (NC) layer of the treated surface which exhibits a grain size gradient. The microstructural evolution with increasing strain involves (1) the formation of slip bands with dislocation-free cells in their interiors, (2) nucleation and migration of high-angle grain boundaries at cell boundaries consisting of high-density tangled dislocations, leading to the formation of submicrosized grains inside the slip bands, followed by (3) the formation of subgrains and dislocation cells inside the submicrosized grains with increasing misorientations, which finally become NC grains. The mechanism of grain refinement was interpreted in terms of the classical migration dynamic recrystallization (DRX) and continuous rotation DRX, respectively, leading to submicrosized and NC grains with increasing strains at high strain rates. The cooperative grain boundary sliding is active at high strain rate, by the presence of arrays of coplanar grain boundaries. (C) 2010 Elsevier B.V. All rights reserved. |
| 关键词 | Nanocystalline
Dynamic Recrystallization
Grain Refinement
Surface Mechanical Attrition Treatment
Ti
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| DOI | 10.1016/j.msea.2010.06.085
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000283113200018
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| 关键词[WOS] | DYNAMIC RECRYSTALLIZATION
; MICROSTRUCTURAL EVOLUTION
; STRUCTURAL REFINEMENT
; FORMATION MECHANISM
; SHEAR LOCALIZATION
; TITANIUM
; METALS
; NANOCRYSTALLIZATION
; TEMPERATURE
; PRINCIPLES
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| WOS研究方向 | Science & Technology - Other Topics
; Materials Science
; Metallurgy & Metallurgical Engineering
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| WOS类目 | Nanoscience & Nanotechnology
; Materials Science, Multidisciplinary
; Metallurgy & Metallurgical Engineering
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| 项目资助者 | NSF of China [10721202]
; 973 Project [2010CB631004]
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/58600
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| 专题 | 非线性力学国家重点实验室
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| 通讯作者 | Wu, S (reprint author), Renmin Univ China, High Sch, 37 Zhongguancun St, Beijing 100080, Peoples R China. |
推荐引用方式
GB/T 7714 |
Wu S,Fan K,Jiang P,et al. Grain Refinement of Pure Ti During Plastic Deformation[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2010,527,26,:6917-6921.
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| APA |
Wu S,Fan K,Jiang P,陈少华,&Wu, S .(2010).Grain Refinement of Pure Ti During Plastic Deformation.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,527(26),6917-6921.
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| MLA |
Wu S,et al."Grain Refinement of Pure Ti During Plastic Deformation".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 527.26(2010):6917-6921.
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