Title:
【発明の名称】耐応力腐食割れ性に優れたオーステナイト鋼及びその用途
Document Type and Number:
Japanese Patent JP2897694
Kind Code:
B2
Abstract:
PURPOSE:To stabilize the structure in a steel and to improve its toughness and irradiation stress corrosion cracking resistance, in an austenitic steel contg. specified amounts of Ni and Cr, by providing the steel with a whole austenitic phase and forming the austenitic phase of single crystals. CONSTITUTION:The compsn. of this austenitic steel is constituted of, by weight, 15 to 30% Ni, 10 to 17.67% Cr and >=45% Fe. the steel contains Cr and Ni in such a manner that it has a whole austenitic structue at 700 deg.C in an equilibrium diagram and contains an austenitic phase or an austenitic phase and a ferritic phase, and the same austenitic phase is formed of single crystals. By producing a structural member used in a radiation exposure environment such as an atomic furnace core, intergranular type stress corrosion cracking induced by the irradiation can be prevented.
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Inventors:
KATO TAKAHIKO
YOSHINARI AKIRA
IKEDA SHINZO
YAMAMOTO MICHOSHI
KODAMA HIDEYO
SATO HISASHI
IZUMITANI MASAKYO
AONO YASUHISA
YOSHINARI AKIRA
IKEDA SHINZO
YAMAMOTO MICHOSHI
KODAMA HIDEYO
SATO HISASHI
IZUMITANI MASAKYO
AONO YASUHISA
Application Number:
JP20063595A
Publication Date:
May 31, 1999
Filing Date:
August 07, 1995
Export Citation:
Assignee:
HITACHI SEISAKUSHO KK
International Classes:
G21D1/00; C22C38/00; C22C38/40; (IPC1-7): C22C38/00; C22C38/40; G21D1/00
Domestic Patent References:
| JP62180037A | ||||
| JP62180038A |
Other References:
日本学術振興会製綱第１９委員会編「鉄鋼と合金元素（上）」（昭４１−２−２８）誠文堂新光社ｐ．７９６−８００、８０６
日本学術振興会製綱第１９委員会編「鉄鋼と合金元素（下）」（昭４１−３−２５）誠文堂新光社ｐ．４７７−４７８、４８８
日本学術振興会製綱第１９委員会編「鉄鋼と合金元素（下）」（昭４１−３−２５）誠文堂新光社ｐ．４７７−４７８、４８８
Attorney, Agent or Firm:
Ogawa Katsuo