Effects of Laser Shock Peening and Ultrasonic Shot Peening on Fatigue Property of 1Cr11Ni2W2MoV Stainless Steel

Zhilin, 赖志林 Lai; Cheng, 汪诚 Wang; Yinghong, 李应红 Li; Liucheng, 周留成 Zhou; Weifeng, 何卫锋 He; Xiangfan, 聂祥樊 Nie; Dong, 孙冬 Sun

doi:10.3788/lop50.051403

Cited by 3 publications

(1 citation statement)

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“…[1] In recent years, it has become the major research emphasis at home and abroad on improving the mechanical properties of materials by the surface modification techniques to process materials or components without changing the base material. [2] Through plastic deformation ultrasonic shot peening (USP) and laser shock peening (LSP) are effective technical methods to improve fatigue life, which can generate residual compressive stress, fabricate grain-refinement surface.…”

Section: Introductionmentioning

confidence: 99%

Comparison Research on Mechanical Properties of High Temperature Alloy after Laser Peened and Ultrasonically Peened

Shen

Wang

Sun

et al. 2014

AMM

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For comparative study of the influence of laser shock peening and ultrasonic shot peening on the mechanical property of superalloy K403, untreated, ultrasonic shot peening with 850°C heat preservation, laser shock (heat preservation, Hp), the fatigue testing of samples under four states were conducted at room temperature, and the analysis of two techniques’ influence on the mechanical properties of K403 was done by hardness tester, profile tester, scanning electron microscopy (SEM). The results indicated that LSP with Hp, LSP, USP with Hp can improve the fatigue life of K403 respectively for 2.4, 2.25, 1.4 times more longer than untreated sample; the increase of micro-hardness gradient after LSP were smaller than after USP. The SEM studies showed that the γ' phase distortion was elongated and the plastic deformation of samples by LSP was larger than by USP.

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Section: Introductionmentioning

confidence: 99%