公开(公告)号：US20230054179A1

公开(公告)日：2023-02-23

申请号：US17785675

申请日：2020-12-14

Applicant: ArcelorMittal

Inventor： Rosalia REMENTERIA FERNANDEZ ,  Frédéric BONNET ,  Maria Elena CORRAL CORRALES ,  Carla OBERBILLIG

IPC: B22F9/08 ,  B22F10/25 ,  B22F10/28 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54

Abstract: A metal powder for additive manufacturing having a composition including the following elements, expressed in content by weight: 0.01%≤C≤0.2%, 4.6%≤Ti≤10%, (0.45×Ti)−0.22%≤B≤(0.45×Ti)+0.70%, S≤0.03%, P≤0.04%, N≤0.05%, O≤0.05% and optionally containing: Si≤1.5%, Mn≤3%, Al≤1.5%, Ni≤1%, Mo≤1%, Cr≤3%, Cu≤1%, Nb≤0.1%, V≤0.5% and including eutectic precipitates of TiB2 and Fe2B, the balance being Fe and unavoidable impurities resulting from the elaboration, the volume percentage of TiB2 being equal or more than 10% and the mean bulk density of the powder being 7.50 g/cm3 or less. A manufacturing method by atomization is also provided.