A AL-TI-CU-MG-B-NI-FE-SI ALLOY FOR ADDITIVE MANUFACTURING

摘要

The invention relates to an Al-Ti-Cu-Mg-B-Ni-Fe-Si powder and a 3D-printed product obtained by processing said powder by an additive manufacturing technique, preferably by a laser-based additive manufacturing technique, more preferably by Laser Powder Bed Fusion. The 3D-printed product according to the invention has at least one of the following characteristics: a) material relative density > 99.4%; b) absence of solidification cracks within the microstructure; c) yield strength or upper yield strength at room temperature comprised between 300 and 500 MPa; d) ultimate tensile strength at room temperature comprised between 400 and 600 MPa; e) hardness higher than 95 HV; f) elongation at fracture > 2%, at room temperature; g) yield strength or upper yield strength > 250 MPa up to 200°C and > 90MPa up to 300°C; h) ultimate tensile strength > 270 MPa up to 200°C and > 100MPa up to 300°C.