Numerical simulation to the process of solid phase bonding for Cu / Al bimetal composite by hydrostatic extrusion

Based on the large deformation elastic-plastic finite element method(FEM) theory and finite model, the process of solid phase bonding for Cu / Al bimetal composite by hydrostatic extrusion was analyzed by ANSYS FEM with frictional elements inserted between two contacting metals. The varying order of relative slippage between inner metal and outer metal along with friction coefficient was obtained. The distributions of the equivalent stress and the equivalent strain in the sample on the process of binding by hydrostatic extrusion were also achieved. The flowing laws of component metal on the deforming process of hydrostatic extrusion were opened out. The computational results are close to those obtained by experiments. The conclusion is that increasing friction coefficient between inner metal and outer metal is the main effective method to bond bimetal materials.