Numerical analysis for the structure effect on stainless steel welding treated by laser shock processing

被引：0

作者：

Yin, Sumin ^{[1
]}

Zhang, Chao ^{[1
]}

Wang, Yun ^{[1
]}

Xu, Zhenying ^{[1
]}

Jiang, Wenlin ^{[1
]}

机构：

[1] School of Mechanical Engineering, Jiangsu University, Zhenjiang

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2013年 / 40卷 / 05期

关键词：

Laser shock processing; Laser technique; Numerical analysis; Stainless steel welding; Welding residual stress;

D O I：

10.3788/CJL201340.0503005

中图分类号：

学科分类号：

摘要：

In order to investigate the influence of laser shock processing on the residual stress distribution of stainless steel welding joint, the numerical analysis of the stainless steel welding process and laser shock processing weld is implemented. The results show that the residual stress distribution of welded structure is not uniform after welding, and the large residual tensile stress is produced on welding surface, meanwhile, the differences of welding residual stress between horizontal and vertical orientation are large. The residual stress of welding area is notably improved after laser shock processing, the residual stress on surface is changed from tensile residual stress into compressive residual stress, and the residual stress increases with laser power density and shocking times increasing. The residual stresses on horizontal and vertical orientation become uniform. The uniform residual stress can be induced with suitable overlapping rate. It provides a reference for the application of the laser shock processing in improving welding structure performance.

引用

共 13 条

[1]

Zhang S., Luo Z., Analysis of residual stress produced by welding and its elimination methods, Metallurgical Power, 6, pp. 38-41, (1996)

[2]

Liu Y., Shen N., Residual stresses analysis for actual material model of autofrettaged tube by non-linear boundary element method, International J. Pressure Vessels and Piping, 48, 1, pp. 10-25, (1991)

[3]

Johnson J.N., Rhode R.W., Dynamic deformation twinning in shock-loaded iron, J. Appl. Phys., 42, 11, pp. 4171-4182, (1971)

[4]

Chen J., Shen W., Yin Z., Et al., Simulation of welding temperature distribution based on element birth and death, Hot Working Technology, 34, 7, pp. 64-65, (2005)

[5]

Chen R., Hua Y., Cai L., Estimate of residual stress of steel materials induced by laser shock wave, Chinese J. Lasers, 33, 2, pp. 278-282, (2006)

[6]

Zhao X., Zhu Y., Sun Q., Analysis of finite element of residual stresses in butt welds, Welding Technology, 32, 5, pp. 14-15, (2003)

[7]

Merrien P., Lieurade H.P., Peyre P., Et al., Laser shock processing of aluminium alloys: Application to high cycle fatigue behaviour, Materials Science and Engineering: A, 210, 1, pp. 102-113, (1996)

[8]

Liu S., The research of laser shock processing technology, (2000)

[9]

Ni H., Ling X., Peng W., Prevention of stress corrosion cracking in weld joint of type 304 stainless steel by class-bead peening, J. Chinese Society for Corrosion and Protection, 25, 3, pp. 152-156, (2005)

[10]

Zhou J., Fan Y., Huang S., Et al., Research and prospect on micro-scale laser shot peening, Chinese J. Lasers, 38, 6, (2011)

← 1 2 →