文献类型：期刊文献

英文题名：High cycle fatigue behavior of inertia friction welded joint of FGH96 alloy at high temperature

作者：Zhang, Shun;Li, Xiao-Long;Zhang, Jian-Feng;Zhang, Lu;Zhu, Ming-Liang[1];Xuan, Fu-Zhen

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China; AECC Commercial Aircraft Engine Co Ltd, Shanghai 200241, Peoples R China

年份：2023

卷号：176

外文期刊名：INTERNATIONAL JOURNAL OF FATIGUE

收录：;EI(收录号：20233214490317);WOS:【SCI-EXPANDED(收录号:WOS:001052396500001)】；

基金：Acknowledgements This work was supported by the Innovation Program of Shanghai Municipal Education Commission (2023-05-49) , National Natural Sci-ence Foundation of China (52105163) and Shanghai Rising-Star Pro-gram (22QB1406400) .

语种：英文

外文关键词：Inertia friction welding; High cycle fatigue; Nickel -based alloy; Crack initiation; Life prediction; Z -parameter model

摘要：High cycle fatigue behavior of FGH96 alloy inertia friction welded joint under axially push-pull cyclic loading was studied at 650 & DEG;C. Results showed fatigue strength of welded joint was comparable to pure base metal. Larger grain size, more twin boundaries and high angle grain boundaries induced a higher crack initiation potential at the base metal. Interior crack initiation was dominant while it was transferred from large facet, to twin-assisted facet, and finally to inclusion with stress level decreasing. The Z-parameter model was applied to fatigue life prediction in the case of facet-induced crack initiation for the first time, and good agreement was obtained between prediction and experimental data.