Dynamic response and residual stress fields of Ti6Al4V alloy under shock wave induced by laser shock peening

CORC > 沈阳自动化研究所 > 中国科学院沈阳自动化研究所 > 装备制造技术研究室

	Dynamic response and residual stress fields of Ti6Al4V alloy under shock wave induced by laser shock peening
	Zhu, Ying ; Peng, Peng ; Guo, Wei ; Qiao HC(乔红超); Sun, Jianfei ; Li, Weidong ; Che, Zhigang ; Liu, Lei ; Guo, Chao ; Li, Bo
刊名	MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
	2017
卷号	25 期号:6 页码:1-16
关键词	laser shock peening FEM simulation dynamic response residual stress fields
ISSN号	0965-0393
通讯作者	Peng, Peng
产权排序	6
中文摘要	Laser shock peening (LSP), an innovative surface treatment technique, generates compressive residual stress on the surface of metallic components to improve their fatigue performance, wear resistance and corrosion resistance. To illustrate the dynamic response during LSP and residual stress fields after LSP, this study conducted FEM simulations of LSP in a Ti6Al4V alloy. Results showed that when power density was 7 GW cm(-2), a plastic deformation occurred at 10 ns during LSP and increased until the shock pressure decayed below the dynamic yield strength of Ti6Al4V after 60 ns. A maximum tensile region appeared beneath the surface at around 240 ns, forming a compressive-tensile-compressive stress sandwich structure with a thickness of 98, 1020 and 606 mu m for each layer. After the model became stabilized, the value of the surface residual compressive stress was 564 MPa at the laser spot center. Higher value of residual stress across the surface and thicker compressive residual stress layers were achieved by increasing laser power density, impact times and spot sizes during LSP. A 'Residual stress hole' occurred with a high laser power density of 9 GW cm(-2) when laser pulse duration was 10 ns, or with a long laser pulse duration of 20 ns when laser power density was 7GW cm(-2) for Ti6Al4V. This phenomenon occurred because of the permanent reverse plastic deformation generated at laser spot center.
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Materials Science, Multidisciplinary ; Physics, Applied
研究领域[WOS]	Materials Science ; Physics
关键词[WOS]	FINITE-ELEMENT-ANALYSIS ; TI-6AL-4V ALLOY ; ALUMINUM-ALLOY ; SIMULATION ; BEHAVIOR ; PHYSICS
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000406382400001
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/20810]
专题	沈阳自动化研究所_装备制造技术研究室
作者单位	1.School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191, China 2.China Academy of Space Technology, Beijing, 100094, China 3.International Research Institute for Multidisciplinary Science, Beihang University, Beijing, 100191, China 4.AVIC the First Aircraft Institute, Xi'an, 710089, China 5.Key Laboratory for High Energy Density Beam Processing Technology, Beijing Aeronautical Manufacturing Technology Research Institute, Beijing, 100024, China 6.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
推荐引用方式 GB/T 7714	Zhu, Ying,Peng, Peng,Guo, Wei,et al. Dynamic response and residual stress fields of Ti6Al4V alloy under shock wave induced by laser shock peening[J]. MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING,2017,25(6):1-16.
APA	Zhu, Ying.,Peng, Peng.,Guo, Wei.,Qiao HC.,Sun, Jianfei.,...&Zhang, Lixin.(2017).Dynamic response and residual stress fields of Ti6Al4V alloy under shock wave induced by laser shock peening.MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING,25(6),1-16.
MLA	Zhu, Ying,et al."Dynamic response and residual stress fields of Ti6Al4V alloy under shock wave induced by laser shock peening".MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING 25.6(2017):1-16.