SB-08-1(081) Improvement of Creep Strength of Ferritic Steels for 650℃ USC Boilers(Advanced Heat Resistant Steels)
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概要
- 論文の詳細を見る
In order to develop advanced ferritic heat resistant steels with sufficient creep rupture strength at 650℃, the improvement of creep rupture strength has been investigated for a tempered martensitic 9Cr-3W base steel. The fine precipitates of Fe-Pd L1_0 type ordered phase and the small amount of boron stabilize the tempered martensitic microstructure and significantly improve the creep rupture strength. The thermomechanical heat treatments can control the distributions of lath and precipitates and stabilizes the tempered martensitic microstructure for up to long times. The improvement of creep strength is also achieved for innovative steels, such as carbon-free martensitic alloys and high-Cr ferrite matrix steels containing very low density of dislocations, to obtain new concepts for the advanced ferritic steels that can be used at 650℃ or higher temperature.
- 一般社団法人日本機械学会の論文
- 2001-06-03
著者
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ABE F.
National Institute for Materials Science
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IGARASHI M.
National Research Institute for Metals (NRIM)
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ITAGAKI T.
National Institute for Materials Science
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Tabuchi M.
National Institute For Material Science
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Tabuchi M.
National Institute For Materials Science (nims)
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Wanikawa S.
National Institute for Materials Science (NIMS)
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Kimura K.
National Institute for Materials Science (NIMS)
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Yamaguchi K.
National Institute for Materials Science (NIMS)
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Itagaki T.
National Institute For Materials Science (nims)
関連論文
- Behaviour of Mn and Si in the Spray Powders during Steam Oxidation of Ni-Cr Thermal Spray Coatings
- Improving the Type IV Cracking Resistance of 9Cr Ferritic Steels by Boron Addition : Creep Properties and Microstructures of High-B 9Cr Heat Resistant Steel Weldments-1
- Effect of Post Weld Heat Treatment on Type IV Cracking of a High Cr Ferritic Steel
- Creep Deformation and the Corresponding Microstructural Evolution in High-Cr Ferritic Steels
- Creep Deformation and the Corresponding Microstructural Evolution in High-Cr Ferritic Steels
- Creep properties affected by morphology of MX in high-Cr ferritic steels
- Degradation of Creep Strength in Welded Joints of 9-12%Cr Steels
- Steam Oxidation Resistance of Ni-Cr Thermal Spray Coatings on 9Cr-1Mo Steel. Part 2 : 50Ni-50Cr
- Steam Oxidation Resistance of Ni-Cr Thermal Spray Coatings on 9Cr-1Mo Steel. Part 1 : 80Ni-20Cr
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- SB-08-1(081) Improvement of Creep Strength of Ferritic Steels for 650℃ USC Boilers(Advanced Heat Resistant Steels)
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