Research Status， Application and Prospect of Key Technologies in Inertial Friction Welding for Aero-engines

Abstract:

Inertial friction welding (IFW), as an advanced solid-state welding process, has been widely applied in the manufacturing of aero-engine rotor components due to its green, efficient, and superior welding quality. This review systematically summarizes the research achievements in recent years regarding the microstructure, mechanical properties, and numerical simulation of IFWed joints of aviation titanium alloys and superalloys. It also summarizes the large-tonnage, high-precision IFW equipment for aerospace and their application in various types of advanced aero-engine rotor components. Future research should focus on addressing key technical challenges in the engineering application of new materials and new structures. This review also presents prospects for future development, highlighting that continuous innovation of IFW technique will provide critical technical support for achieving the high performance, lightweight design, and enhanced reliability of the new generation of aero-engines.