中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Numerical simulation of the surface morphology and residual stress field of IN718 alloy by Gaussian mode laser shock

文献类型:期刊论文

作者Hu XL(胡宪亮)1,2,3; Wu JJ(吴嘉俊)1,2,3; Zhao JB(赵吉宾)1,2; Yang YQ(杨玉奇)1,2,3; Qiao HC(乔红超)1,2
刊名Optik
出版日期2020
卷号207页码:1-7
关键词Laser shock processing IN718 alloy Gaussian mode laser Laser pulse energy Numerical simulation Surface morphology Residual stress
ISSN号0030-4026
产权排序1
英文摘要

Laser shock processing (LSP) is a new surface modification technology that can improve mechanical properties and extending fatigue life. The numerical simulation was utilized in this work, the IN718 alloy was treated by Gaussian mode laser with the laser pulse energy of 3−7 J, laser pulse width of 12 ns and laser spot in diameter of 3 mm. And the effects of laser pulse energy on the surface morphology and residual stress field of material was investigated. The numerical simulation results showed that after the treatment of LSP, the plastic deformation and compressive residual stress layer with a certain depth is formed on the near surface of material. The amount of the plasticity deformation of material was increased with the laser pulse energy. And the compressive residual stress in surface and the direction of depth are increased with the laser pulse energy too. With the laser pulse energy from 3−7 J, the maximum compressive residual stresses are appeared at the center of the surface corresponding to the laser spot. When the laser pulse energy is increased from 3 J–7 J, the plastic deformation in depth is increases from 0.50 μm–1.86 μm, and the maximum compressive residual stress is increased fromt 362 MPa–742 MPa. In conclusion, LSP can improve mechanical properties of IN718 significantly, and the laser pulse energy is the most important factor to affect the LSP effect. This work can provide a certain theoretical guidance for researchers to study the IN718 alloy treated by LSP.

WOS关键词PLASMA
资助项目National Natural Science Foundation of China[51875558] ; National Key Development Program of China[2016YFB1192704] ; NSFC-Liaoning Province United Foundation of China[U1608259]
WOS研究方向Optics
语种英语
WOS记录号WOS:000523186200100
资助机构National Natural Science Foundation of China (51875558) ; National Key Development Program of China (2016YFB1192704) ; and NSFC-Liaoning Province United Foundation of China (U1608259)
源URL[http://ir.sia.cn/handle/173321/26365]  
专题工艺装备与智能机器人研究室
通讯作者Qiao HC(乔红超)
作者单位1.Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China
2.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
推荐引用方式
GB/T 7714
Hu XL,Wu JJ,Zhao JB,et al. Numerical simulation of the surface morphology and residual stress field of IN718 alloy by Gaussian mode laser shock[J]. Optik,2020,207:1-7.
APA Hu XL,Wu JJ,Zhao JB,Yang YQ,&Qiao HC.(2020).Numerical simulation of the surface morphology and residual stress field of IN718 alloy by Gaussian mode laser shock.Optik,207,1-7.
MLA Hu XL,et al."Numerical simulation of the surface morphology and residual stress field of IN718 alloy by Gaussian mode laser shock".Optik 207(2020):1-7.

入库方式: OAI收割

来源:沈阳自动化研究所

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