Development and production of 18Mn-18Cr non-magnetic retaining ring with high yield strength.
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概要
- 論文の詳細を見る
Retaining ring for electric generator is required to have non-magnetism, high strength, high ductility and stress corrosion cracking (SCC) resistance. Several kinds of materials for non-magnetic retaining ring have been developed and recently 18%Mn-18%Cr austenitic steel which has been developed to improve susceptibility to SCC of 18%Mn-5%Cr austenitic steel has begun to use. 18%Mn-18%Cr steel contained high nitrogen content has been investigated as the material with high strength, high ductility and SCC resistance. On the base of the fundamental studies of chemical composition and cold work on increasing yield strength of 18%Mn-18%Cr steel, a trial 18%Mn-18%Cr retaining ring with yield strength 1400 MPa was successfully manufactured and mechanical properties, fatigue strength, fracture toughness and SCC were investigated for the trial ring material.
- The Iron and Steel Institute of Japanの論文
著者
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Ishizaka Junji
Research Laboratory, Muroran Plant, The Japan Steel Works, Ltd.
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Orita Katsutoshi
Power Generation Equipments & Materials Section, Muroran Plant, The Japan Steel Works, Ltd.
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Ikeda Yasumi
Power Generation Equipments & Materials Section, Muroran Plant, The Japan Steel Works, Ltd.
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Iwadate Tadao
Research Laboratory, Muroran Plant, The Japan Steel Works, Ltd.