Residual Stress Field of ZK60 Specimen with Central Hole Induced by Both-Side Laser Shot Peening

Jianzhong, 周建忠 Zhou; Xiaodong, 杨小东 Yang; Shu, 黄舒 Huang; Lingling, 胡玲玲 Hu; Juan, 黄娟 Huang; Yachun, 戴亚春 Dai

doi:10.3788/cjl20103707.1850

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“…Zhao JF et al [6], with the aid of the finite element fatigue analysis software, found that the extended laser peening can effectively inhibit fatigue crack. Yang X D et al [7] studied three dimensional residual hole specimen of ZK60 magnesium alloy single-sided and double-sided laser shock stress field, the results show that the double laser shock than single laser shock to obtain greater residual compressive stress. This paper, using the finite element software ABAQUS, establishes the model of laser shock peening (LSP) of TC4 titanium alloy, and analyzes the influence of different parameters on the residual stress of TC4 titanium alloy and plastic deformation.…”

Section: Introductionmentioning

confidence: 99%

FEM Study and Characterization on Laser Shock Peening of TC4 Titanium Alloy Structure

Hou

Zhang

et al. 2014

AMM

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This paper, using the finite element software ABAQUS, establishes the model of laser shock peening (LSP) of TC4 titanium alloy, and analyzes the influence of different parameters on the residual stress of TC4 titanium alloy and plastic deformation. The results show that LSP can make the surface of TC4 titanium alloy have large compressive stress and plastic deformation, hardness and prolong the fatigue life of materials. Laser energy and the impact frequency are the main factor of surface residual stress effects. The multi-point LSP can perform processing enhanced in surface area, and form residual compressive stress on the surface of the material and in a certain depth.

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Section: Introductionmentioning

confidence: 99%