Microstructure characteristics and formation mechanism of TC17 titanium alloy induced by laser shock processing
文献类型：期刊论文
| 作者 | Yang Y(杨扬); Qiao HC(乔红超) ; Zhang, Hua
|
| 刊名 | Journal of Alloys and Compounds
 |
| 出版日期 | 2017 |
| 卷号 | 722页码:509-516 |
| 关键词 | LSP Ultrahigh strain rate Dynamic recrystallization Microstructural characteristics TC17 titanium alloy |
| ISSN号 | 0925-8388 |
| 产权排序 | 3 |
| 通讯作者 | Yang Y(杨扬) |
| 中文摘要 | As one of the surface strengthening technologies, laser shock processing (LSP) can form a gradient refined surface layer in metallic materials. The gradient microstructural characteristics of TC17 titanium alloy induced by ultrahigh strain rate deformation in LSP were systemically examined by transmission electron microscope (TEM). The microstructure near substrate consisted of dislocations and deformation twins with high density; The microstructures featured of dislocation tangles, dislocation cells and subgrains closer to the surface, and the deformation twins became less prevalent due to higher strains and strain rates where there were insufficient time for atoms to reposition to the twinned orientation to accomplish the twinning deformation; The original coarse grains with size of tens of micrometers (average grain size 43 μm) were refined instantly to hundreds of nanometers (average grain size 396 nm) in the top surface of TC17 titanium alloy after LSP, which was the result of rotation dynamic recrystallization (RDR) proved with quantitative calculation of recrystallization kinetics. There was a gradient distribution of hardness values of the LSPed surface layer. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | STACKING-FAULT ENERGY ; SURFACE NANOCRYSTALLIZATION ; DEFORMATION ; EVOLUTION ; TI-5AL-2SN-2ZR-4MO-4CR ; TEMPERATURE ; REFINEMENT ; CRACK |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000405520400067 |
| 源URL | [http://ir.sia.cn/handle/173321/20725]  |
| 专题 | 沈阳自动化研究所_装备制造技术研究室 |
| 作者单位 | 1.Shenyang Institute of Automation, Chinese Academy of Science, Shenyang 110016, China 2.School of Material Science and Engineering, Central South University, Changsha, 410083, China 3.Key Laboratory of Ministry of Education for Nonferrous Metal Materials Science and Engineering, Central South University, Changsha, 410083, China |
| 推荐引用方式 GB/T 7714 | Yang Y,Qiao HC,Zhang, Hua. Microstructure characteristics and formation mechanism of TC17 titanium alloy induced by laser shock processing[J]. Journal of Alloys and Compounds,2017,722:509-516. |
| APA | Yang Y,Qiao HC,&Zhang, Hua.(2017).Microstructure characteristics and formation mechanism of TC17 titanium alloy induced by laser shock processing.Journal of Alloys and Compounds,722,509-516. |
| MLA | Yang Y,et al."Microstructure characteristics and formation mechanism of TC17 titanium alloy induced by laser shock processing".Journal of Alloys and Compounds 722(2017):509-516. |
入库方式： OAI收割
来源：沈阳自动化研究所
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