Numerical Characterizations of Viscoplastic Behavior of TA6V with Metallurgical Phase Change

In order to predict the residual mechanical state of assemblies during pulsed laser welding, mechanical and metallurgical behaviors of the materials need to be precisely characterized. Based on experimental data and analyses, a numerical model is developed in Comsol Multiphysics to take into account the predominant effects (metallurgy influence, viscoplastic behavior) identified for TA6V. To validate our implementation, experimental and numerical results are compared at different temperatures.