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Microstructure characteristics and formation mechanism of TC17 titanium alloy induced by laser shock processing
Yang Y(杨扬); Zhang, Hua; Qiao HC(乔红超)
作者部门装备制造技术研究室
关键词Lsp Ultrahigh Strain Rate Dynamic Recrystallization Microstructural Characteristics Tc17 Titanium Alloy
发表期刊Journal of Alloys and Compounds
ISSN0925-8388
2017
卷号722页码:509-516
收录类别SCI ; EI
EI收录号20172503802983
WOS记录号WOS:000405520400067
产权排序3
资助机构National Natural Science Foundation of China (No. 51574290, 51274245), NSAF (No.U1330126)
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.
语种英语
WOS标题词Science & Technology ; Physical Sciences ; Technology
WOS类目Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
关键词[WOS]STACKING-FAULT ENERGY ; SURFACE NANOCRYSTALLIZATION ; DEFORMATION ; EVOLUTION ; TI-5AL-2SN-2ZR-4MO-4CR ; TEMPERATURE ; REFINEMENT ; CRACK
WOS研究方向Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sia.cn/handle/173321/20725
专题装备制造技术研究室
通讯作者Yang Y(杨扬)
作者单位1.School of Material Science and Engineering, Central South University, Changsha, 410083, China
2.Key Laboratory of Ministry of Education for Nonferrous Metal Materials Science and Engineering, Central South University, Changsha, 410083, China
3.Shenyang Institute of Automation, Chinese Academy of Science, Shenyang 110016, China
推荐引用方式
GB/T 7714
Yang Y,Zhang, Hua,Qiao HC. 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,Zhang, Hua,&Qiao HC.(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.
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