ADDITIVE MANUFACTURING THERMO-MECHANICAL PROCESSING INFLUENCE ON TENSILE MECHANICAL BEHAVIOR

This study describes a new analysis framework for additive manufacturing. The concept of processes mechanics and thermo-mechanical processing are introduced to provide a physics-based understanding of the materials behavior and the state of residual stresses. A semi-Analytical approach based on the well-known moving heat source is used to predict temperature. Subsequently, the thermal stresses are calculated analytically thanks to Green's functions. In order to demonstrate the influence of the process parameters on the mechanical properties, the tensile behavior and fracture morphology experiments on 316L are investigated experimentally. The obtained results are analyzed in the context of the predicted temperature and thermal stresses.