US 11,987,872 B2
Microstructural homogenization of additively manufactured titanium articles
Joseph A. Grohowski, Jr., Glen Falls, NY (US); and Paul H. Sheffield, Queensbury, NY (US)
Assigned to Praxis Powder Technology, Inc., Queensbury, NY (US)
Filed by Praxis Powder Technology, Inc., Queensbury, NY (US)
Filed on Sep. 15, 2021, as Appl. No. 17/476,349.
Application 17/476,349 is a continuation of application No. PCT/US2020/022868, filed on Mar. 15, 2020.
Claims priority of provisional application 62/819,565, filed on Mar. 16, 2019.
Prior Publication US 2022/0002855 A1, Jan. 6, 2022
Int. Cl. C22F 1/18 (2006.01); B22F 3/15 (2006.01); B22F 10/28 (2021.01); B22F 10/64 (2021.01); B33Y 40/20 (2020.01); C22F 1/02 (2006.01)
CPC C22F 1/183 (2013.01) [B22F 3/15 (2013.01); B22F 10/64 (2021.01); B33Y 40/20 (2020.01); C22F 1/02 (2013.01); B22F 10/28 (2021.01); B22F 2301/205 (2013.01); B22F 2998/10 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A method of modifying the physical characteristics of a base titanium alloy article previously manufactured through a selective melting process to a near net shape, said method comprising:
introducing hydrogen through a thermohydrogen process to a base titanium alloy article previously manufactured through a selective melting process and being anisotropic and coarse grained, resulting in a titanium alloy article exhibiting a more isotropic and fine grained equiaxed microstructure;
wherein the base titanium alloy article has an oxygen content above 2500 ppm.