	US 11,913,098 B2
	Self-healing alloy and method for manufacturing the same
Kyung Sik Choi, Seoul (KR); Hoo Dam Lee, Seongnam-si (KR); Tae Gyu Lee, Seoul (KR); Byung Ho Min, Suwon-si (KR); Young Jun Kwon, Seoul (KR); Keun Won Lee, Seoul (KR); Yoon Jung Won, Seoul (KR); and Ki Sub Cho, Seoul (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); KIA MOTORS CORPORATION, Seoul (KR); and Kookmin University Industry Academy Cooperation Foundation, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); KIA MOTORS CORPORATION, Seoul (KR); and Kookmin University Industry Academy Cooperation Foundation, Seoul (KR)
Filed on Mar. 22, 2021, as Appl. No. 17/208,816.
Claims priority of application No. 10-2020-0161689 (KR), filed on Nov. 26, 2020.
Prior Publication US 2022/0162729 A1, May 26, 2022
Int. Cl. C22C 38/22 (2006.01); B22F 3/24 (2006.01); C22C 33/02 (2006.01)

CPC C22C 38/22 (2013.01) [B22F 3/24 (2013.01); C22C 33/0278 (2013.01); B22F 2003/248 (2013.01); B22F 2301/35 (2013.01)]

2 Claims

1. A method for manufacturing a self-healing alloy, the method comprising:

preparing alloy raw material powder containing 5 to 11% by weight of molybdenum (Mo), 3 to 5% by weight of chromium (Cr), iron (Fe) as a remainder, and less than 1.5% by weight of unavoidable impurities; and

sintering, homogenizing, and cooling the alloy raw material powder,

wherein the sintering is performed at 700 to 900° C. for 1 to 10 minutes,

wherein the homogenizing is performed at 1,050 to 1100° C. for 3 to 6 hours,

wherein the cooling is performed at a cooling rate of 100 to 300° C./sec, and

wherein the chromium induces nucleation in a non-uniform portion.