文献类型：期刊文献

英文题名：Gradient nanostructure enabled exceptional fretting fatigue properties of Inconel 718 superalloy through submerged abrasive waterjet peening

作者：Yao, Shulei[1];Chi, Yuxin[1];Zhu, Xianhao[1];Zhang, Kaiming[1];Lu, Tiwen[1];Li, Kaishang[1];Wang, Ning[1];Zhang, Chengcheng[2];Liu, Shuang[1];Zhang, Xiancheng[1];Tu, Shantung[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：2025

卷号：38

期号：1

外文期刊名：CHINESE JOURNAL OF AERONAUTICS

收录：;EI(收录号：20245017518133);WOS:【SCI-EXPANDED(收录号:WOS:001385839100001)】；

基金：This work was financially supported by the National Key Research and Development Project, China (Nos. 2018YFA0703300, 2022YFB4600019), the National Natural Science Foundation of China (Nos. 52275148, 52405154), the Innovation Program Phase II of AECC Commercial Aircraft Engine Co. Ltd, China (No. HT-3RJC1053-2020). Shulei YAO is also grateful for the support by the Postdoctoral Fel-lowship Program of CPSF (No. GZB20240219) and the Shanghai Sailing Program (No. 24YF2708100).

语种：英文

外文关键词：Submerged abrasive waterjet peening; Inconel 718 superalloy; Microstructural evolution; Surface integrity; Fretting fatigue

摘要：Submerged Abrasive Waterjet Peening (SAWJP) shows great application potential in augmenting the fatigue properties of metallic parts. Thus, the present work aims to investigate the influence of SAWJP on the Surface Integrity (SI) and Fretting Fatigue (FF) properties of Inconel 718 (IN718) superalloy and illustrate the microstructural evolution, FF life improvement, and fretting wear mechanism. First, the SI of the IN718 specimen was examined following treatment via SAWJP. Results showed that the specimen subjected to SAWJP formed a total plastic deformation layer of 56 lm. The maximum microhardness and Compressive Residual Stress (CRS) measured across the depth of the SAWJP-treated specimens exhibited an increase in values ranging between 522 HV and 541 HV and 1171-1380 MPa, respectively. The FF test results of the specimen before and after SAWJP treatment at ambient temperatures indicated that the FF life of the SAWJP-treated specimen surpassed that of the as-received specimen by a factor of 2.81. The examination of the FF fracture, contact surface, and crack propagation behavior revealed the crucial factors contributing to the enhanced FF resistance of the IN718 specimen, including the gradient nanostructure characterized by ultra -refined grains, substantial CRS, and elevated microhard- ness, which were all induced by the SAWJP treatment. (c) 2024 The Author(s). Published 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/).