Alloys or metallic compositions – Ferrous – Nine percent or more chromium containing
Patent
1990-08-07
1992-05-26
Yee, Deborah
Alloys or metallic compositions
Ferrous
Nine percent or more chromium containing
148327, 376339, 376900, C22C 3858
Patent
active
051165694
ABSTRACT:
An austenitic steel excellent in resistance to neutron irradiation embrittlement which contains, by weight, not more than 0.03% carbon, not more than 1% silicon, 5 to 25% manganese, 15 to 26% chromium, and 10 to 20% nickel, the ratio of atomic volume of chromium to the average atomic volume of matrix of the steel being from 0.900 to 1.030. It is possible to add to the austenitic steel, besides the above-mentioned alloying elements, at least one element selected from the group consisting of niobium, titanium, zirconium, tantalum and vanadium which are effective in corrosion resistance and irradiation embrittlement under neutron irradiation in total amounts of not more than 1.0%. At least one of components composing the inside of a nuclear reactor or nuclear fusion reactor is made of the austenitic steel.
REFERENCES:
patent: 326 (1987-09-01), Brager et al.
patent: 4302247 (1981-11-01), Abe et al.
Japanese Patent Examined Publication No. 1-18143.
Japanese Patent Unexamined Publication No. 62-238355.
Japanese Patent Unexamined Publication No. 62-238353.
Japanese Patent Unexamined Publication No. 62-107047.
Hattori Shigeo
Kasahara Shigeki
Kuniya Jiro
Nakata Kiyotomo
Hitachi , Ltd.
Yee Deborah
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