US 12,083,601 B2
Method for forming viable high entropy alloys via additive manufacturing
Sergey Mironets, Burlington (CA); Thomas J. Martin, East Hampton, CT (US); and Alexander Staroselsky, Avon, CT (US)
Assigned to Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Apr. 18, 2022, as Appl. No. 17/722,775.
Application 17/722,775 is a continuation in part of application No. 16/280,990, filed on Feb. 20, 2019, abandoned.
Prior Publication US 2022/0241854 A1, Aug. 4, 2022
Int. Cl. B22F 3/23 (2006.01); B22F 1/145 (2022.01); B22F 3/15 (2006.01); B22F 9/04 (2006.01); B33Y 10/00 (2015.01); B33Y 40/10 (2020.01); B33Y 40/20 (2020.01)
CPC B22F 3/23 (2013.01) [B22F 1/145 (2022.01); B22F 3/15 (2013.01); B22F 9/04 (2013.01); B33Y 10/00 (2014.12); B33Y 40/10 (2020.01); B33Y 40/20 (2020.01)] 5 Claims
OG exemplary drawing
 
1. A method for making a component comprising a high entropy alloy (HEA), the method comprising:
combining a reaction component with a powdered HEA precursor;
igniting the combination of the reaction component and the powdered HEA precursor to induce a self-propagating high-temperature synthesis (SHS) reaction and to form a solid HEA feedstock;
converting the solid HEA feedstock into a powder HEA feedstock, wherein converting the solid HEA feedstock into a powder HEA feedstock comprises grinding the HEA feedstock into a powder; and
additively manufacturing at least a portion of the powder feedstock into a HEA component or HEA preformed shape approximating a desired shape of the component;
wherein the HEA feedstock comprises nickel, cobalt, chromium, iron, aluminum, titanium, zirconium, niobium, molybdenum, and tantalum, wherein the aluminum, titanium, zirconium, niobium, each have a first molar percentage, and the molybdenum and tantalum each have a second molar percentage, wherein each first molar percentage is approximately equivalent, and wherein each second molar percentage is approximately half of each of the first molar percentage.