Title: The effect of ultrasonic shot peening on the fatigue life of alloy materials: a review

Authors: Yun Chen; Sen Deng; Chao Zhu; Kaixiong Hu; Fei Yin

Addresses: School of Logistics Engineering, Wuhan University of Technology, Wuhan, 430063, China ' School of Logistics Engineering, Wuhan University of Technology, Wuhan, 430063, China ' School of Logistics Engineering, Wuhan University of Technology, Wuhan, 430063, China ' School of Logistics Engineering, Wuhan University of Technology, Wuhan, 430063, China ' Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan, 430070, China

Abstract: It is more and more widespread to introduce nano-structured grains on the surface of alloys to improve their strength. One of the technologies to achieve this is the ultrasonic shot peening (USP) technique, which has attracted special attention. With this technology, uniform nano-structured grains can be formed on the surface and compressive residual stress can be developed that can improve the fatigue life. However, pits will be formed during the USP process, which will cause stress concentration and lower the fatigue life. This paper reviews the effects of USP processing parameters on the evolution of the surface morphology, microstructure and residual stress. A finite element simulation based on the velocity model was established to simulate the impact of the USP processing on the fatigue performance.

Keywords: USP; ultrasonic shot peening; nano grains; stress concentration factor; USP processing parameters; finite element simulation.

DOI: 10.1504/IJCMSSE.2021.121360

International Journal of Computational Materials Science and Surface Engineering, 2021 Vol.10 No.3/4, pp.209 - 234

Received: 15 Dec 2020
Accepted: 28 May 2021

Published online: 07 Mar 2022 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article