US 11,053,567 B2
Method for the fabrication of architected 3D high entropy alloy structures
Yang Lu, New Territories (HK); and James Utama Surjadi, Kowloon (HK)
Assigned to City University of Hong Kong, Kowloon (HK)
Filed by City University of Hong Kong, Kowloon (HK)
Filed on May 21, 2018, as Appl. No. 15/984,673.
Prior Publication US 2019/0352743 A1, Nov. 21, 2019
Int. Cl. C22C 1/04 (2006.01); B22F 1/00 (2006.01); B22F 3/10 (2006.01); B22F 3/105 (2006.01); B22F 3/24 (2006.01); C22C 30/00 (2006.01); C22C 47/06 (2006.01); C22C 47/14 (2006.01); B22F 10/30 (2021.01)
CPC C22C 1/04 (2013.01) [B22F 1/0059 (2013.01); B22F 3/105 (2013.01); B22F 3/1021 (2013.01); B22F 3/24 (2013.01); C22C 30/00 (2013.01); C22C 47/06 (2013.01); C22C 47/14 (2013.01); B22F 10/30 (2021.01); B22F 2003/248 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for the fabrication of architected 3D high entropy alloy structures comprising the steps of: deriving a 3D architecture based on at least one physical property of a high entropy alloy;
preparing a fabrication mixture that includes a mixture of two or more metallic powders of nearly equal quantities, a photosensitive polymer, and a curing agent;
arranging a first layer of the fabrication mixture on a platform proximate to an energy source;
directing energy provided by the energy source to one or more portions of the fabrication mixture to activate the curing agent to form one or more solid portions;
translating the platform relative to the energy source such that the platform is proximate to the energy source and arranging a second layer of the fabrication mixture contiguous to the first layer of fabrication mixture on the platform; whereby the steps of arranging a layer of fabrication mixture, directing energy to the one or more portions of the fabrication mixture, and translating the platform are repeated such that the resulting layers of one or more solid portions are arranged in such a way as to form a structure and removing the photosensitive polymer from the structure by means of a debinding process so that the structure is entirely comprised of a mixture of metals and includes the derived 3D architecture.