Title:
AUSTENITIC STAINLESS CAST STEEL AND METHOD FOR PRODUCING AUSTENITIC STAINLESS CAST STEEL
Document Type and Number:
WIPO Patent Application WO/2022/113466
Kind Code:
A1
Abstract:
With respect to this austenitic stainless cast steel, if a cross-section thereof is heated at 1,000°C, the average number Nc of carbides per unit area, said carbides having a circle-equivalent diameter of 500 nm or more, in the central part of an austenite crystal grain is 6.0 × 10-2/μm2 or more; and if Ngb is the average number of carbides per unit area, said carbides having a circle-equivalent diameter of 500 nm or more, in the vicinity of the grain boundary of an austenite crystal grain, Ngb/Nc is 1.3 or less.
Inventors:
NAKAMURA TADAAKI (JP)
SAITO NOBUHIKO (JP)
KOMAI NOBUYOSHI (JP)
HASHIMOTO KEITA (JP)
KONNO YUYA (JP)
SAITO NOBUHIKO (JP)
KOMAI NOBUYOSHI (JP)
HASHIMOTO KEITA (JP)
KONNO YUYA (JP)
Application Number:
PCT/JP2021/032593
Publication Date:
June 02, 2022
Filing Date:
September 06, 2021
Export Citation:
Assignee:
MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD (JP)
International Classes:
C21D6/00; C22C30/00; C22C38/00; C22C38/58
Foreign References:
| JPS5419416A | 1979-02-14 | |||
| CN101560626A | 2009-10-21 |
Other References:
SILVA FRANCISCO, SANTOS JORGE, GOUVEIA RONNY: "Dissolution of Grain Boundary Carbides by the Effect of Solution Annealing Heat Treatment and Aging Treatment on Heat-Resistant Cast Steel HK30", METALS, vol. 7, no. 251, 5 July 2017 (2017-07-05), XP055933544, DOI: 10.3390/met7070251
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
Download PDF:
Previous Patent: MOLDED BODY
Next Patent: ANTIVIBRATION DEVICE PRODUCTION METHOD, STOPPER FOR ANTIVIBRATION DEVICE, AND ANTIVIBRATION DEVICE
Next Patent: ANTIVIBRATION DEVICE PRODUCTION METHOD, STOPPER FOR ANTIVIBRATION DEVICE, AND ANTIVIBRATION DEVICE