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Experimental investigation of laser peening on Ti17 titanium alloy for rotor blade applications
Qiao HC(乔红超)
作者部门装备制造技术研究室
关键词Laser Peening Titanium Alloy Surface Treatment Fatigue Performance
发表期刊APPLIED SURFACE SCIENCE
ISSN0169-4332
2015
卷号351页码:524-530
收录类别SCI ; EI
EI收录号20154701588478
WOS记录号WOS:000359496600067
产权排序1
资助机构National 863 Program of China (No. 2012AA041310).
摘要Laser peening is an innovative surface treatment technique, and can significantly improve the mechanical performance of metallic components. To investigate the fatigue life of Ti17 titanium alloy by laser peening, laser peening experiment was undertaken using Nd:YAG laser system with the pulse-width of 15 ns and max pulse-energy of 7 J. Firstly, the mechanical properties and microstructure with different laser peening parameters were investigated, which were measured and observed by Vickers indenter, X-ray diffraction, scanning electron microscope and transmission electron microscope. Micro-hardness and compressive residual stress distribution was remarkably improved. High-density dislocations and fine-grains were observed in the surface layer. Then, several stress levels were chosen to be applied on the tension and compression fatigue specimens. The fatigue life and fracture mechanism of the specimens without- and with-laser peened were compared, and the strengthening mechanism was indicated by analyzing the effects on the microstructure and residual stress evolution. The results demonstrate that laser peening could effectively improve the fatigue life of Ti17 titanium alloy. (C) 2015 Elsevier B.V. All rights reserved.
语种英语
WOS标题词Science & Technology ; Physical Sciences ; Technology
WOS类目Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
关键词[WOS]FATIGUE PERFORMANCE ; RESIDUAL-STRESSES ; SHOCK ; BEHAVIOR ; TI-6AL-4V ; SIMULATION ; MICROSTRUCTURE ; STEEL ; JOINT
WOS研究方向Chemistry ; Materials Science ; Physics
引用统计
被引频次:7[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/173321/16912
专题装备制造技术研究室
通讯作者Qiao HC(乔红超)
作者单位Shenyang Institute of Automation, Chinese Academy of Science, Shenyang, China
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Qiao HC. Experimental investigation of laser peening on Ti17 titanium alloy for rotor blade applications[J]. APPLIED SURFACE SCIENCE,2015,351:524-530.
APA Qiao HC.(2015).Experimental investigation of laser peening on Ti17 titanium alloy for rotor blade applications.APPLIED SURFACE SCIENCE,351,524-530.
MLA Qiao HC."Experimental investigation of laser peening on Ti17 titanium alloy for rotor blade applications".APPLIED SURFACE SCIENCE 351(2015):524-530.
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