文献类型：期刊文献

英文题名：Effects of Different Mechanical Surface Enhancement Techniques on Surface Integrity and Fatigue Properties of Ti-6Al-4V: A Review

作者：Wang, Zi-Meng[1];Jia, Yun-Fei[1];Zhang, Xian-Cheng[1];Fu, Yao[1];Zhang, Cheng-Cheng[2];Tu, Shan-Tung[1]

机构：[1]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Sch Mech & Power Engn, Shanghai, Peoples R China;[2]AECC Commercial Aircraft Engine Co Ltd, Shanghai Engn Res Ctr Commercial Aircraft Engine, Shanghai, Peoples R China

年份：2019

卷号：44

期号：6

起止页码：445

外文期刊名：CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES

收录：;EI(收录号：20194107526616);WOS:【SCI-EXPANDED(收录号:WOS:000487651900001)】；

基金：The authors would like to acknowledge gratefully for the financial support through National Natural Science Foundations of China (51725503, 51605164, 51575183) and the 111 project. The author X.C. Zhang is also grateful for the support by Shanghai Technology Innovation Program of SHEITC (CXY-2015-001), Fok Ying Tung Education Foundation, and Young Program of Yangtze River Scholars. Y.F. Jia is also grateful for the support by Shanghai Sailing Program (16YF1402300) and Shanghai Chenguang Program (16CG34).

语种：英文

外文关键词：Surface treatment; fatigue performance; surface integrity

摘要：Titanium and its alloys are widely used in aerospace, biomedicine, chemical industries, and other fields due to the excellent properties as high specific strength, strong corrosion resistance, and superior biocompatibility. With the development of mechanical industry, especially of aerospace, the higher fatigue performance of titanium alloys is demanded. Generally, fatigue cracking originates from the materials surface, so the surface roughness, residual stress, and microstructure in surface layer are believed to be the dominant factors in affecting the fatigue crack initiation and propagation, as well as the fatigue strength. Thus, by means of the mechanical surface enhancement techniques, the achievement of reducing the surface roughness, introducing the residual compressive stress, improving the surface microstructure and increasing the surface hardness could significantly enhance the fatigue strength. The effects of various mechanical surface treatments, such as deep rolling, shot peening, and laser shock peening, on surface integrity and fatigue properties of Ti-6Al-4V were reviewed in this article. By comparing surface roughness, hardness, residual stress, surface grain size, depth of grain refinement layer, fatigue properties at room and high temperatures, and residual stress relaxation during fatigue of different surface-treated Ti-6Al-4V, the advantages and the limitations of these surface treatments were identified and evaluated.