文献类型：期刊文献

英文题名：Cavitation abrasive integrated waterjet peening process and the effect of process parameters on the surface integrity of TA19 titanium alloy

作者：Yao, Shulei[1];Wang, Gongyu[1];Li, Kaishang[1];Wang, Ning[1,3];Zhang, Chengcheng[2];Liu, Shuang[1];Liu, Changli[1];Zhang, Xiancheng[1,3];Tu, Shantung[1]

机构：[1]East China Univ Sci & Technol, 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;[3]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2022

卷号：440

外文期刊名：SURFACE & COATINGS TECHNOLOGY

收录：;EI(收录号：20221812056838);WOS:【SCI-EXPANDED(收录号:WOS:000800009700003)】；

基金：This work was supported financially by the National Key Research and Development Program of China (No. 2018YFA0703300) , the National Natural Science Foundation of China (No. 51725503) , 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：Cavitation abrasive integrated waterjet peening; Process parameters; Surface integrity; Microstructure evolutions

摘要：Waterjet peening has emerged as a potential surface treatment technology, which is gradually being used to improve the surface integrity and mechanical behavior of metal materials. Submerged abrasive waterjet peening, which combines cavitation peening and abrasive waterjet peening and called cavitation abrasive integrated waterjet peening (CAI-WJP), is proposed in this paper and was studied experimentally. The principle of CAI-WJP is first introduced. The effect of the CAI-WJP parameters (i.e., water pressure, standoff distance, traverse speed, path interval, and peening angle) on the surface integrity of TA19 titanium alloy was systematically investigated. Results show that the specimen treated with CAI-WJP using different process parameters formed a plastic deformation layer with a depth of 5-45 mu m. The minimum surface roughness of Ra obtained by CAI-WJP was 0.348 mu m, which is 28.5% lower than the as-received surface. The maximum surface microhardness increased by up to 21.1%, with a maximum work hardening depth of 150 mu m. The surface compressive residual stress (CRS) increased to approximately 640-800 MPa compared with the original CRS of 50-80 MPa on the as-received specimen, and a maximum CRS depth of 360 mu m was obtained. The microstructure evolution on the topmost surface and subsurface of the specimen treated with CAI-WJP with a water pressure of 100 MPa was observed by transmission electron microscopy, which showed that nanocrystallization with amorphization occurred, and nanocrystals with an average size of 6.9 nm formed on the topmost surface. In addition, many dislocation cells and tangles formed on the subsurface with a depth of 15 mu m, and a number of dislocation loops, walls, and pinning were found at the depth of 150 mu m. This work verifies the effectiveness of the proposed CAI-WJP and provides a favorable reference for how to pick up optimized CAI-WJP process parameters.