	US 11,708,627 B2
	Ni-based superalloy and method for manufacturing Ni-based superalloy
Chuya Aoki, Tokyo (JP); Masayoshi Date, Tokyo (JP); and Toshiki Ishida, Tokyo (JP)
Assigned to PROTERIAL LTD., Tokyo (JP)
Appl. No. 17/440,125
Filed by PROTERIAL, LTD., Tokyo (JP)
PCT Filed Mar. 24, 2020, PCT No. PCT/JP2020/012980 § 371(c)(1), (2) Date Sep. 16, 2021, PCT Pub. No. WO2020/203460, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-065236 (JP), filed on Mar. 29, 2019.
Prior Publication US 2022/0154311 A1, May 19, 2022
Int. Cl. C22C 19/05 (2006.01); C22F 1/10 (2006.01)

CPC C22C 19/055 (2013.01) [C22C 19/056 (2013.01); C22F 1/10 (2013.01)]

5 Claims

1. A Ni-based superalloy having a composition comprising, in mass %, C: up to 0.10%, Si: up to 0.5%, Mn: up to 0.5%, P: up to 0.05%, S: up to 0.050%, Fe: up to 45%, Cr: 14.0 to 22.0%, Co: up to 18.0%, Mo: up to 8.0%, W: up to 5.0%, Al: 0.10 to 2.80%, Ti: 0.50 to 5.50%, Nb: up to 5.8%, Ta: up to 2.0%, V: up to 1.0%, B: up to 0.030%, Zr: up to 0.10%, Mg: up to 0.005%, and the balance of Ni with inevitable impurities, wherein the Ni-based superalloy has a grain orientation spread (GOS) of at least 0.7° as an intragranular misorientation parameter measured by an SEM-EBSD technique.