Numerical Study on Strengthening Effect of Laser Shot Peening for Wrought Magnesium Alloy

Su Qin Jiang; Hong Guang Xu

doi:10.4028/www.scientific.net/AMM.217-219.2234

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 217-219Numerical Study on Strengthening Effect of Laser...

Numerical Study on Strengthening Effect of Laser Shot Peening for Wrought Magnesium Alloy

Abstract:

Based on finite element method, the FEA model used for analyzing fatigue properties of sample treated by laser shot peening (LSP) was established. In order to research the influence of material intensity on LSP effect, two kinds of wrought magnesium alloys AZ31B and ZK60 with different intensity were chosen as object, the compressive residual stress and fatigue life after LSP were analyzed. After spring back analysis the elastic strain is released in material inner, the value of compressive residual stress was reduced; after LSP with 3 times, the fatigue life gains of AZ31B and ZK60 were 105% and 163%, respectively. The results show that strengthening effect of high intensity material treated by LSP is better than that of low intensity material.

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Periodical:

Applied Mechanics and Materials (Volumes 217-219)

Pages:

2234-2237

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.217-219.2234

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Online since:

November 2012

Authors:

Su Qin Jiang, Hong Guang Xu

Keywords:

Fatigue Life, Laser Shot Peening, Residual Stress, Wrought Magnesium Alloy

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