公开(公告)号：US09945019B2

公开(公告)日：2018-04-17

申请号：US15372500

申请日：2016-12-08

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Yuefeng Gu ,  Toshio Osada ,  Yong Yuan ,  Tadaharu Yokokawa ,  Hiroshi Harada

IPC: C22F1/10 ,  C22C19/05 ,  C22C19/07 ,  C22F1/00 ,  C22C30/00 ,  B21J5/02 ,  F01D5/28 ,  F01D5/02

CPC classification number: C22F1/10 ,  B21J5/02 ,  C22C19/05 ,  C22C19/056 ,  C22C19/07 ,  C22C30/00 ,  C22F1/00 ,  F01D5/02 ,  F01D5/28 ,  F05D2300/175

Abstract: Disclosed herein is a nickel-based heat-resistant superalloy produced by a casting and forging method, the nickel-based heat-resistant superalloy comprising 2.0 mass % or more but 25 mass % or less of chromium, 0.2 mass % or more but 7.0 mass % or less of aluminum, 19.5 mass % or more but 55.0 mass % or less of cobalt, [0.17×(mass % of cobalt content−23)+3] mass % or more but [0.17×(mass % of cobalt content−20)+7] mass % or less and 5.1 mass % or more of titanium, and the balance being nickel and inevitable impurities, and being subjected to solution heat treatment at 93% or more but less than 100% of a γ′ solvus temperature.