文献类型：期刊文献

英文题名：Improvement of titanium alloy TA19 fatigue life by submerged abrasive waterjet peening: Correlation of its process parameters with surface integrity and fatigue performance

作者：Wang, Gongyu[1];Yao, Shulei[1];Chi, Yuxin[1];Zhang, Chengcheng[2];Wang, Ning[1];Chen, Yalong[2];Lu, Rongsheng[1];Li, Zhuang[1];Zhang, Xiancheng[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[2]AECC Commercial Aircraft Engine Co LTD, Shanghai Engn Res Ctr Commercial Aircraft Engine, Shanghai 201108, Peoples R China

年份：2024

卷号：37

期号：1

起止页码：377

外文期刊名：CHINESE JOURNAL OF AERONAUTICS

收录：;EI(收录号：20234615062821);WOS:【SCI-EXPANDED(收录号:WOS:001150109200001)】；

基金：This work was supported financially by the National Natural Science Foundation of China (Nos. 52275148 and U21B2077), Natural Science Foundation of Shanghai (20ZR1415300), Innovation Program of Shanghai Municipal Education Commission (2019-01-07-00-02-E00068), and Innovation Program Phase II of AECC Commercial Aircraft Engine Co. Ltd. (Grant No. HT-3RJC1053-2020).

语种：英文

外文关键词：Fatigue testing; Process parameters; Submerged abrasive waterjet peening; Surface integrity; Surface treatment; Titanium alloy TA19

摘要：Submerged abrasive waterjet peening (SAWJP) is an effective anti-fatigue manufacturing technology that is widely used to strengthen aeroengine components. This study investigated the correlation of SAWJP process parameters on surface integrity and fatigue life of titanium alloy TA19. SAWJP with different water pressures and standoff distances (SoDs) was conducted on the TA19 specimens. The surface integrity of the specimens before and after SAWJP with different process parameters was experimentally studied, including microstructure, surface roughness, micro-hardness, and compressive residual stress (CRS). Finally, fatigue tests of the specimens before and after SAWJP treatment with different process parameters were carried out at room temperature. The results highlighted that the fatigue life of the TA19 specimen can be increased by 5.46, 5.98, and 6.28 times under relatively optimal process parameters, which is mainly due to the improved surface integrity of the specimen after SAWJP treatment. However, the fatigue life of specimens treated with improper process parameters is decreased by 0.55 to 0.69 times owing to the terrible surface roughness caused by the material erosion. This work verifies that SAWJP can effectively improve the surface integrity and fatigue life of workpieces, and reveals the relationship between process parameters, surface integrity, and fatigue life, which provides support for the promotion of SAWJP in the manufacturing fields. (c) 2023 Production and hosting by Elsevier Ltd. on behalf of Chinese Society of Aeronautics and Astronautics. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).