Numerical simulation of inertia friction welding process of GH4169 alloy

Friction welding is a solid state welding technology with good quality and high automation. It has been widely used in many industry fields especially in automobile and aerospace industry. Because of the characters of less process parameters and high automation, inertia friction welding is popular in many fields. In this paper, a 2-D thermo-mechanical FEM model was developed to simulate inertia welding process. In this model, the temperature dependency of the thermal and mechanical properties of material was considered. The finite-element software MSC.Marc was used to calculate the temperature field, stress field and strain field during inertia friction welding process. The transient temperature field and the deformation of GH4169 superalloy during inertia friction welding process were predicted. The temperature filed during inertia friction welding process was measured by means of thermocouples. The calculated temperature filed is in good agreement with the experimental result