Invention Grant
- Patent Title: Precipitation hardening type single crystal austenitic steel, and usage the same
- Patent Title (中): 沉淀硬化型单晶奥氏体钢，用法相同
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Application No.: US63427Application Date: 1998-04-21
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Publication No.: US5987088APublication Date: 1999-11-16
- Inventor: Yasuhisa Aono , Akira Yoshinari , Yasuo Kondo , Junya Kaneda , Hideyo Kodama , Takahiko Kato , Shigeo Hattori , Masahiko Arai
- Applicant: Yasuhisa Aono , Akira Yoshinari , Yasuo Kondo , Junya Kaneda , Hideyo Kodama , Takahiko Kato , Shigeo Hattori , Masahiko Arai
- Applicant Address: JPX Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JPX Tokyo
- Priority: JPX7-16665 19950203
- Main IPC: C30B21/02
- IPC: C30B21/02 ; C21D6/00 ; C21D6/02 ; C22C38/00 ; C22C38/40 ; C22C38/58 ; C22C38/60 ; C30B29/52 ; C30B33/00 ; G21C3/07 ; G21C5/10 ; G21C13/087 ; G21C21/00 ; G21C1/04
Abstract:
In order to provide an austenitic single crystal stainless steel having preferable stress corrosion cracking resistance, strength, and irradiation induced embrittlement resistance so as to extend the life of a nuclear reactor core structure, which is used under a high radiation dose environment, a method is employed, which comprises the steps of homogeneously dispersing carbides into a parent phase of the austenitic single crystal stainless steel by a two step solution heat treatment, and subsequently effecting an ageing heat treatment after rapid cooling for precipitating fine carbides. Austenitic single crystal stainless steel having preferable stress corrosion cracking resistance, strength, and irradiation induced embrittlement resistance can be provided, and the life of nuclear reactor core structure, which is used under a high radiation dose environment, can be extended.
Public/Granted literature
- USD388377S Tire tread Public/Granted day:1997-12-30
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