Abstract: By applying ABAQUS software,a two-dimensional axisymmetric model of radial friction welding was established based on heat transfer theory,elastic-plastic mechanics and finite element method.The radial friction welding temperature field was simulated by remeshing technology.In the secondary stage of friction welding,the dynamic balance between heat generated by friction on the friction interface and heat loss with flash and heat conduction is achieved and the interface temperature is not higher than 1320℃.In the third stage of friction welding,as the metal layer at high temperature being squeezed out,the temperature on the interface decreases rapidly.By analyzing the metallographic microstructure, the thermal cycle process in the joint was obtained.The simulated temperature distribution in joint accords well with the test results.