US 12,325,067 B2
Method for manufacturing an aluminium alloy part by additive manufacturing from a powder mixture containing ZrSi2 particles
Mathieu Opprecht, Grenoble (FR); Jean-Paul Garandet, Grenoble (FR); and Guilhem Roux, Grenoble (FR)
Assigned to COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, Paris (FR)
Filed by COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, Paris (FR)
Filed on Nov. 5, 2021, as Appl. No. 17/453,781.
Claims priority of application No. 2011559 (FR), filed on Nov. 10, 2020.
Prior Publication US 2022/0143702 A1, May 12, 2022
Int. Cl. B22F 10/28 (2021.01); B22F 1/054 (2022.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01)
CPC B22F 10/28 (2021.01) [B22F 1/054 (2022.01); B33Y 70/00 (2014.12); B22F 2301/052 (2013.01); B22F 2304/054 (2013.01); B22F 2304/056 (2013.01); B22F 2304/058 (2013.01); B22F 2304/10 (2013.01); B33Y 10/00 (2014.12)] 12 Claims
OG exemplary drawing
 
1. Method for manufacturing an aluminium alloy part by additive manufacturing comprising a step in which a layer of a mixture of powders is locally melted then solidified, wherein the mixture of powders comprises:
first particles comprising at least 80 wt. % aluminium and up to 20 wt. % one or more additional elements, and
second particles of ZrSi2,
the mixture of powders comprising 1.8 wt. % to 4 wt. % second particles, and wherein, during the additive manufacturing, ZrSi2 decomposes to form in situ an Al3Zr germinating phase.