文献类型：期刊文献

英文题名：Surface Strengthening on Fretting Fatigue Crack Propagation of Ti-6Al-4V Dovetail Slots

作者：Wang, Ning[1]; Zhang, Heng[1]; Wang, Zhi-Yun[1]; Zhu, Xian-Hao[1]; Chi, Yu-Xin[1]; Yao, Shu-Lei[1]; Zeng, Xi-Ting[1]; Zhang, Xian-Cheng[1]; Tu, Shan-Tung[1]

机构：[1] Key Laboratory of Pressure Systems and Safety, Ministry of Education, School of Mechanical and Power Engineering, East China University of Science and Technology, Xuhui District, Shanghai, China

年份：2026

卷号：106

起止页码：176

外文期刊名：Springer Proceedings in Materials

收录：EI(收录号：20261720557539)

语种：英文

外文关键词：Abrasives - Aluminum alloys - Crack initiation - Strengthening (metal) - Ternary alloys - Thermal fatigue - Vanadium alloys

摘要：Fretting fatigue frequently causes the failure of critical components in aerospace and aviation. This study investigates fretting fatigue in the dovetail slots structure of Ti-6Al-4V titanium alloy. Surface strengthening method was developed as Deflected Abrasive Waterjet Process (DAWJP). Experimental research was conducted at both room and high temperatures. FRANC3D and finite element simulations were used to investigate the effects of initial crack angles, crack depths, axial loads, and residual stresses on crack propagation. Crack propagation was analyzed using DIC techniques, and then fracture morphology was examined through SEM. Additionally, a full-life prediction model was proposed incorporate the crack propagation life and temperature effects. The results indicate that the crack propagation in dovetail slots is primarily dominated by mode I cracks, and the initial crack angle has minimal impact on crack initiation life. The crack propagation direction ultimately aligns perpendicularly to the contact surface. DAWJP reinforcement significantly improves the dovetail slots specimen fretting fatigue life, and then reduces the number of crack sources and fatigue striation spacing. Additionally, the higher loads result in smaller fatigue striation spacing. The error between the model's predicted life and the actual life is controlled within two times of the acceptable error range. ? The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2026.