Fujio Abe
National Institute for Materials Science
Heat-affected zoneCreepPrecipitation hardeningComposite materialFlexural strengthHardening (metallurgy)MartensiteMetallurgyMaterials scienceWeldingTemperingAlloyGrain boundaryBoronCarbideTerm (time)Precipitation (chemistry)MicrostructureStress (mechanics)Austenite
292Publications
52H-index
5,988Citations
Publications 285
Newest
#1Fujio Abe (National Institute for Materials Science)H-Index: 52
#2Masaaki Tabuchi (National Institute for Materials Science)H-Index: 26
Last. Susumu Tsukamoto (National Institute for Materials Science)H-Index: 16
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Soluble boron stabilises fine distributions of M23C6 carbides near grain boundaries (GBs) in 9Cr steel during creep, enhancing GB precipitation hardening, and suppresses the Type IV fracture in wel...
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#1Fujio Abe (National Institute for Materials Science)H-Index: 52
The creep rupture ductility has been investigated for Gr.122 at 550 to 650 oC for up to 112,247.8 h. The obtained results are compared with those for Gr.91 and Gr.92. The degradation in reduction o...
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#1Fujio Abe (National Institute for Materials Science)H-Index: 52
The influence of boron nitride (BN) particles, W and Mo concentrations and creep test conditions of stress, temperature and test duration on the creep ductility parameter λ in UK R5 has been invest...
2 CitationsSource
#1Fujio Abe (National Institute for Materials Science)H-Index: 52
The creep rupture ductility has been investigated for Gr.91 and Gr.92 at 550 to 700°C for up to 118,648.8 h. The degradation in the reduction of area (RA) is more significant in Gr.92 than in Gr.91...
3 CitationsSource
#1Fujio Abe (National Institute for Materials Science)H-Index: 52
ABSTRACTThe creep deformation behaviour and its effect on the creep life and rupture ductility are investigated for W-Mo-balanced 9Cr steels at 600 °C to 700 °C. The creep life is described as tr =...
2 CitationsSource
#1Kota Sawada (National Institute for Materials Science)H-Index: 23
#2Kazuhiro Kimura (National Institute for Materials Science)H-Index: 24
Last. Takashi Watanabe (National Institute for Materials Science)H-Index: 15
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AbstractThe background of the NIMS Creep Data Sheet Project, together with the preliminary study and facilities, material selection, and testing method are summarized. The outcomes from the project...
3 CitationsSource
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#1Fujio Abe (National Institute for Materials Science)H-Index: 52
#2Toshio Ohba (National Institute for Materials Science)H-Index: 4
Last. Masaaki Tabuchi (National Institute for Materials Science)H-Index: 26
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ABSTRACTThe effect of tungsten–molybdenum (W–Mo) balance on creep life has been investigated for five heats of martensitic 9Cr steel with 1.5 % Mo equivalent (= 1/2W + Mo) at 600, 650 and 700°C. The combination of W and Mo concentrations in the present steel is 3W–0Mo, 2.8W–0.1Mo, 2.4W–0.3Mo, 1.8W–0.6Mo and 0W–1.5Mo. The time to rupture tr exhibits a monotonous increase with increasing the W–Mo balance parameter 1/2W/(1/2W + Mo), namely, with increasing W concentration and concomitantly with dec...
9 CitationsSource
#1Y. Liu (CAUC: Civil Aviation University of China)H-Index: 2
#2Susumu Tsukamoto (National Institute for Materials Science)H-Index: 16
Last. Fujio Abe (National Institute for Materials Science)H-Index: 52
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The microstructure evolution of fine-grained heat-affected zone (FGHAZ) of Gr.92 steel welded joint has been investigated during creep using scanning electron microscopy, electron backscatter diffraction, and transmission electron microscopy. The microstructure evolution strongly depended on the applied stress level. At the stress level of 90 MPa, the grains of the FGHAZ were coarsened after creep. When the stress level decreased to 70 MPa, the grains of the FGHAZ were found to be further refine...
2 CitationsSource
#1Fujio Abe (National Institute for Materials Science)H-Index: 52
#2Toshio Ohba (National Institute for Materials Science)H-Index: 4
Last. Masaaki Tabuchi (National Institute for Materials Science)H-Index: 26
view all 5 authors...
ABSTRACTThe effect of W-Mo balance and boron nitrides (BN) on creep rupture ductility has been investigated for five heats of 9% Cr steel with 1.5% Mo equivalent, 0.003% boron and 0.05% nitrogen at 600oC, 650oC and 700oC. The maximum time to rupture was 68,718 h at 650oC. The reduction of area (RA) slightly decreases for up to about 8000 and 1000 h at 600 and 650oC, respectively, while it significantly decreases above those. The BN particles are responsible for the degradation in RA at low stres...
6 CitationsSource