Caractérisation des pièces en aciers inoxydables réalisées par la technique de fabrication additive

Abstract

Additive manufacturing is a recent technological alternative that leads to the manufacture of parts by three-dimensional printing. One of the techniques used is CMT (Cold Metal Transfer) which is based on the construction of a part by droplets melted and instantly deposited on a support. The objective of our work is the geometric, mechanical and microstructural characterization of a stainless steel wall in order to control the projection parameters by CMT. We used different characterization techniques: micrometric measurements, hardness, traction and microscopy. We have shown that the characteristics of the walls strongly depend on the CMT current and the torch displacement speed