Study on surface modification induced in wrought magnesium alloy by laser shot peening

Author

Jiang, Suqin ; Wu, Jianhua ; Xu, Hongguang ; Ding, Hongyan ; Zhou, Jianzhong

Author_Institution

Fac. of Mech. Eng., Huaiyin Inst. of Technol., Huaiyin, China

fYear

2010

fDate

26-28 June 2010

Firstpage

5298

Lastpage

5301

Abstract

Surface modification of magnesium alloy by laser shot peening (LSP) was studied, and the strengthening effect of two kinds of wrought magnesium alloys AZ31B and ZK60 treated by LSP was compared. Firstly, based on numerical simulation, the distribution of residual stress and the surface plastic deformation in the shot region were analyzed by using ABAQUS software. Then according to laser parameters used in the numerical simulation, the strengthening effect of LSP on the two magnesium alloys was studied experimentally. Results indicated that the greater compressive residual stress and micro-hardness could be obtained for high intensity material than that of low intensity material, but plastic deformation degree of the former is lower than that of the latter. The good agreement between the simulation results and the experimental ones indicated that the numerical analysis method is an available approach for studying LSP process.

Keywords

compressive strength; hardening; internal stresses; laser materials processing; magnesium alloys; microhardness; plastic deformation; shot peening; ABAQUS software; compressive residual stress; laser shot peening; microhardness; plastic deformation degree; residual stress distribution; strengthening effect; surface modification; surface plastic deformation; wrought magnesium alloy; Aluminum alloys; Electric shock; Fatigue; Laser theory; Magnesium; Mechanical engineering; Numerical simulation; Optical materials; Residual stresses; Surface emitting lasers; laser shot peening; magnesium alloy; residual stress;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechanic Automation and Control Engineering (MACE), 2010 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-7737-1

Type

conf

DOI

10.1109/MACE.2010.5536152

Filename

5536152