| Abstract Scope |
A CAD solid model can generate near-net form, fully dense metallic objects with moderately complicated geometrical characteristics using Laser Metal Deposition technology. Results show that alloys with high entropy can reach good mechanical properties via additive manufacturing. A fine grain structure will develop because of the localized nature of the laser heating process, leading to a considerable improvement in yield strength without sacrificing ductility. However, in layers deposited by laser melting of alloyed high entropy alloy powders, significant tensile tension may develop; furthermore, high entropy alloys with dominant BCC structures may be too brittle to be examined in tension. This study investigates a straightforward and effective computational model for simulating material properties, such as the stress-strain mechanisms, using COMSOL Multiphysics for laser-deposited materials excessively brittle to be tested in tension. The first principal stresses and longitudinal strain under axial tensile loading conditions were measured using a 3D structural mechanics model. |