The simulation of morphology of dissimilar copper–steel electron beam welds using level set method

In present work, the simulation of morphology and velocity field in dissimilar electron beam welds formed between the metals with limited solubility is described by the example of copper–stainless steel couple. Finite element software COMSOL Multiphysics 3.5 has been employed due to its flexibility in solving of coupled multiphysical problems. mination of horizontal flows allows reducing the model to two dimensions. Level set method has been used to determine the position of the interface between immiscible components basing on coupled heat transfer and fluid flow pseudo-stationary solution. olution of the shape, fluid flow and mixing pattern in function of operational parameters has been demonstrated. The simulated morphology is shown to be in accordance with experimental results: global composition and morphology of the welds.