Title:
オーステナイト系耐熱合金及び溶接構造物
Document Type and Number:
Japanese Patent JP6384611
Kind Code:
B2
Abstract:
An austenitic heat-resistant alloy is provided that provides good crack resistance and high-temperature strength in a stable manner. The austenitic heat-resistant alloy has a chemical composition of, in mass %: 0.04 to 0.15 % C; 0.05 to 1 % Si; 0.3 to 2.5 % Mn; up to 0.04 % P; up to 0.0015 % S; 2 to 4 % Cu: 11 to 16 % Ni; 16 to 20 % Cr; 2 to 5 % W; 0.1 to 0.8 % Nb; 0.05 to 0.35 % Ti; 0.001 to 0.015 % N; 0.0005 to 0.01 % B; up to 0.03 % Al; up to 0.02 % O; 0 to 0.02 % Sn; 0 to 0.5 % V; 0 to 2 % Co; 0 to 5 % Mo; 0 to 0.02 % Ca; 0 to 0.02 % Mg; 0 to 0.2 % REM; and the balance being Fe and impurities, the alloy having a microstructure with a grain size represented by a grain size number in accordance with ASTM E112 of 2.0 or more and less than 7.0.
Inventors:
Hiroshi Hirata
Koichi Okada
Jokutoku Kana
Atsuro Iseta
Toshihide Ono
Katsuki Tanaka
Koichi Okada
Jokutoku Kana
Atsuro Iseta
Toshihide Ono
Katsuki Tanaka
Application Number:
JP2017526239A
Publication Date:
September 05, 2018
Filing Date:
June 02, 2016
Export Citation:
Assignee:
Nippon Steel & Sumitomo Metal Corporation
International Classes:
C22C38/00; C22C38/58
Domestic Patent References:
| JP2013076156A | ||||
| JP2013133533A | ||||
| JP2001262283A |
Attorney, Agent or Firm:
Hidetoshi Ueba
Satoshi Komiyama
Satoshi Komiyama