Competitive effect of residual stress and surface roughness on the fatigue life of shot peened S42200 steel at room and elevated temperature

被引：42

作者：

Fan, Kaifa ^{[1
,2
]}

Liu, Daoxin ^{[1
]}

Liu, Yanjie ^{[1
]}

Wu, Junnan ^{[1
]}

Shi, Hailan ^{[1
]}

Zhang, Xiaohua ^{[1
]}

Zhou, Kai ^{[1
]}

Xiang, Junfeng ^{[1
]}

Wahab, Magd Abdel ^{[2
]}

机构：

[1] Northwestern Polytech Univ, Sch Civil Aviat, Corros & Protect Res Lab, Xian, Peoples R China

[2] Univ Ghent, Fac Engn & Architecture, Soete Lab, Ghent, Belgium

来源：

TRIBOLOGY INTERNATIONAL | 2023年 / 183卷

基金：

中国国家自然科学基金;

关键词：

Shot peening; Compressive residual stress; Stress intensity factor; Finite element model; Fatigue; PEENING PARAMETERS; STAINLESS-STEEL; MESHFREE METHOD; RELAXATION; ALLOY; TI-6AL-4V; STRENGTH; MICROSTRUCTURE; PARTICLES; INTEGRITY;

D O I：

10.1016/j.triboint.2023.108422

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The effect of shot peening (SP) on the fatigue life of S42200 steel at room and elevated temperature is investigated. The fatigue test is carried out on a high temperature rotating bending tester. Surface integrity characterization is used to study the effect of SP on surface properties. Furthermore, Finite Element Method (FEM) combined with a fatigue damage model, namely Zheng Equation, is proposed to predict the fatigue life. The results show that SP effectively improves the fatigue life of S42200 steel under all temperatures. However, at lower temperature, higher strength SP leads to higher fatigue resistance, while at higher temperature, lower strength SP leads to higher fatigue resistance. This can be explained by the competitive effect of surface roughness and compressive residual stress (CRS) relaxation on the local stress concentration. This research can be a good guide to the application of SP at different temperatures.

引用

页数：9

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