US 11,807,927 B2
Complex copper alloy including high-entropy alloy and method of manufacturing same
Eunsoo Park, Seoul (KR); Kooknoh Yoon, Seoul (KR); Jiyoung Kim, Seoul (KR); and Jeongwon Yeh, Seoul (KR)
Assigned to WONJINMETAL CO., LTD., Dongducheon-si (KR)
Appl. No. 17/286,942
Filed by WONJINMETAL Co., Ltd., Dongducheon-si (KR)
PCT Filed Oct. 22, 2019, PCT No. PCT/KR2019/013869
§ 371(c)(1), (2) Date Apr. 20, 2021,
PCT Pub. No. WO2020/085755, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 10-2018-0126132 (KR), filed on Oct. 22, 2018.
Prior Publication US 2021/0395863 A1, Dec. 23, 2021
Int. Cl. C22C 9/04 (2006.01); C22C 1/03 (2006.01)
CPC C22C 9/04 (2013.01) [C22C 1/03 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A complex copper alloy comprising:
Metal matrix including copper or a copper alloy; and
High-entropy alloy (HEA) precipitations existing inside grains of the metal matrix and wherein the high-entropy alloy has a spherical shape,
wherein the complex copper alloy has a following Chemical Formula 1:
(Cu100-xZnx)y(HEA)100-y  [Chemical Formula 1]
(in Chemical Formula 1, 0≤x≤45, 90<y≤100 at %, and HEA includes one or more alloy elements selected from the group consisting of Cr, Mn, Fe, Co, and Ni).