US 11,692,240 B2
Process for manufacturing an aluminum alloy part
Bechir Chehab, Voiron (FR)
Assigned to C-TEC Constellium Technology Center, Voreppe (FR)
Appl. No. 17/282,285
Filed by C-TEC Constellium Technology Center, Voreppe (FR)
PCT Filed Oct. 3, 2019, PCT No. PCT/FR2019/052347
§ 371(c)(1), (2) Date Apr. 1, 2021,
PCT Pub. No. WO2020/070452, PCT Pub. Date Apr. 9, 2020.
Claims priority of application No. 1871133 (FR), filed on Oct. 5, 2018.
Prior Publication US 2021/0331244 A1, Oct. 28, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C22C 1/00 (2023.01); B33Y 70/00 (2020.01); B22F 10/00 (2021.01); C22C 1/04 (2023.01); B33Y 40/20 (2020.01); C22C 21/00 (2006.01); B22F 10/64 (2021.01); B22F 12/41 (2021.01); B22F 10/28 (2021.01); C21D 1/18 (2006.01); C22F 1/04 (2006.01); B22F 10/22 (2021.01); B22F 10/25 (2021.01); B22F 1/00 (2022.01); B22F 3/24 (2006.01); B33Y 10/00 (2015.01)
CPC C22C 1/0416 (2013.01) [B22F 1/00 (2013.01); B22F 10/22 (2021.01); B22F 10/25 (2021.01); B22F 10/28 (2021.01); B22F 10/64 (2021.01); B22F 12/41 (2021.01); B33Y 40/20 (2020.01); B33Y 70/00 (2014.12); C21D 1/18 (2013.01); C22C 21/00 (2013.01); C22C 21/003 (2013.01); C22F 1/04 (2013.01); B22F 2003/248 (2013.01); B22F 2301/052 (2013.01); B22F 2301/205 (2013.01); B22F 2301/35 (2013.01); B22F 2998/10 (2013.01); B33Y 10/00 (2014.12)] 28 Claims
OG exemplary drawing
 
1. A process for manufacturing a part comprising a formation of successive solid metal layers, which are superimposed on each other, each layer describing a pattern defined using a digital model (M), each layer being formed by depositing a filler metal, the filler metal being subjected to an energy beam so as to become molten and to constitute, upon solidifying, said solid metal layer, wherein the filler metal takes the form of a powder,
wherein the filler metal is an aluminum alloy comprising at least the following alloy elements:
Fe, according to a mass fraction from 1 to 3.7%;
Zr and/or Hf and/or Er and/or Sc and/or Ti, according to a mass fraction from 0.5 to 4% each if present, and according to a mass fraction less than or equal to 4% in total;
Si, according to a mass fraction from 0 to 4%; and
V, according to a mass fraction from 0 to 4%;
and wherein the aluminum alloy i) comprises no Cu, ii) comprises Mg according to a mass fraction of at most 0.5%, or iii) comprises no Cu and comprises Mg according to a mass fraction of at most 0.5%.