Title:
HIGH-NICKEL AUSTENITIC STAINLESS STEEL RESISTANT TO DEGRADATION CAUSED BY NEUTRON IRRADIATION
Document Type and Number:
WIPO Patent Application WO/1997/009456
Kind Code:
A1
Abstract:
A high-nickel austenitic stainless steel resistant to degradation caused by neutron irradiation to be used as a structural material which has such a resistance to degradation caused by neutron irradiation that it does not undergo stress corrosion cracking under the condition of use of light weight reactors even after it has been irradiated with neutron at a dose of around 1 x 1022 n/cm2 (E > 1 MeV). The steel is produced by conducting solution heat treatment at 1,000 to 1,150 �C of a stainless steel containing on the weight basis 0.005 - 0.08 % C, at most 0.3 % Mn, at most 0.2 % Si + P + S, 25-40 % Ni, 25-40 % Cr, at most 3 % Mo or at most 5 % Mo + W, at most 0.3 % Nb + Ta, at most 0.3 % Ti, at most 0.001 % B, and the balance consisting of Fe.
Inventors:
YONEZAWA TOSHIO (JP)
IWAMURA TOSHIHIKO (JP)
KANASAKI HIROSHI (JP)
FUJIMOTO KOJI (JP)
NAKADA SHIZUO (JP)
AJIKI KAZUHIDE (JP)
NAKAMURA MITSUHIRO (JP)
IWAMURA TOSHIHIKO (JP)
KANASAKI HIROSHI (JP)
FUJIMOTO KOJI (JP)
NAKADA SHIZUO (JP)
AJIKI KAZUHIDE (JP)
NAKAMURA MITSUHIRO (JP)
Application Number:
PCT/JP1996/002442
Publication Date:
March 13, 1997
Filing Date:
August 30, 1996
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
YONEZAWA TOSHIO (JP)
IWAMURA TOSHIHIKO (JP)
KANASAKI HIROSHI (JP)
FUJIMOTO KOJI (JP)
NAKADA SHIZUO (JP)
AJIKI KAZUHIDE (JP)
NAKAMURA MITSUHIRO (JP)
YONEZAWA TOSHIO (JP)
IWAMURA TOSHIHIKO (JP)
KANASAKI HIROSHI (JP)
FUJIMOTO KOJI (JP)
NAKADA SHIZUO (JP)
AJIKI KAZUHIDE (JP)
NAKAMURA MITSUHIRO (JP)
International Classes:
C21D6/00; C22C30/00; C22C38/00; C22C38/44; G21D1/00; C22C38/54; C21D8/00; (IPC1-7): C22C38/00; C22C38/54; C21D8/00; C21D6/00
Foreign References:
| JPH0368737A | 1991-03-25 | |||
| JPS6411950A | 1989-01-17 | |||
| JPS6244559A | 1987-02-26 | |||
| JPS62217190A | 1987-09-24 | |||
| JPH0397830A | 1991-04-23 | |||
| JPS58120766A | 1983-07-18 |
Other References:
Author, HIROSHI KAGAWA, "Basic of Easy Technique for Heat Treatment of Metal", 20 October 1981, KEIGAKU SHUPPAN, p. 61-62.
"Iron and Steel", 69(14), HARUKI SHIRAISHI, (1983), p 1540-1548.
See also references of EP 0789089A4
"Iron and Steel", 69(14), HARUKI SHIRAISHI, (1983), p 1540-1548.
See also references of EP 0789089A4
Download PDF: