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F. Masuyama (2006)
Creep degradation in welds of Mod.9Cr-1Mo steelInternational Journal of Pressure Vessels and Piping, 83
高橋 由紀夫, 広幸 福富, 直樹 三浦 (2008)
OS1306 高クロム鋼溶接継手のクリープ強度と超音波試験による損傷検出性の検討(高クロム鋼の高温強度と寿命評価,オーガナイズドセッション), 2008
K. Kubushiro, Satoshi Takahashi, K. Morishima (2010)
Degradation of Microstructures during Creep in High Cr Steel WeldmentJournal of The Society of Materials Science, Japan, 59
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Analysis of creep in a welded ‘P91’ pressure vesselInternational Journal of Pressure Vessels and Piping, 60
J. Francis, W. Mazur, H. Bhadeshia (2006)
Review Type IV cracking in ferritic power plant steelsMaterials Science and Technology, 22
Y. Hasegawa, T. Muraki, M. Ohgami (2006)
Identification and Formation Mechanism of a Deformation Process Determining Microstructure of Type IV Creep Damage of the Advanced High Cr Containing Ferritic Heat Resistant SteelTetsu To Hagane-journal of The Iron and Steel Institute of Japan, 92
Yukio Takahashi, M. Tabuchi (2011)
Evaluation of Creep Strength Reduction Factors for Welded Joints of Grade 122 SteelJournal of Pressure Vessel Technology-transactions of The Asme, 133
M. Tabuchi, Yukio Takahashi (2012)
Evaluation of Creep Strength Reduction Factors for Welded Joints of Modified 9Cr-1Mo SteelJournal of Pressure Vessel Technology-transactions of The Asme, 134
M. Tabuchi, H. Hongo (2011)
Evaluation of long-term creep damage in high Cr ferritic steel weldsMaterials at High Temperatures, 28
H. Hongo, M. Tabuchi, Takashi Watanabe (2012)
Type IV Creep Damage Behavior in Gr.91 Steel Welded JointsMetallurgical and Materials Transactions A, 43
B. Dogan, B. Petrovski (2001)
Creep crack growth of high temperature weldmentsInternational Journal of Pressure Vessels and Piping, 78
H. Ernst (1983)
Unified Solution for J Ranging Continuously from Pure Bending to Pure Tension
M. Tabuchi, A. Yokobori, R. Sugiura, M. Yatomi, A. Fuji, K. Kobayashi (2010)
Results of a Japanese round robin program for creep crack growth using Gr.92 steel weldsEngineering Fracture Mechanics, 77
T. Ogata, T. Sakai, M. Yaguchi (2010)
Damage assessment method of P91 steel welded tube under internal pressure creep based on void growth simulationInternational Journal of Pressure Vessels and Piping, 87
AbstractHigh Cr ferritic steels have been used in the 600°C class ultra-super critical (USC) thermal power plants. More than a decade has passed from the application of high Cr steels to USC power plants in Japan, and type-IV creep damages in the welded components become concerns. In the present paper, long-term creep tests for the welded joints of the high Cr steels (Gr.91 and Gr.122 steels) were conducted. Microstructures and creep damages in the heat affected zone (HAZ) were investigated using the thick plate specimens. Remaining life assessment methods of high Cr steel welds were discussed based on the experimental results. Further, to assist the standardization of the testing method for creep crack growth in welded joints, we have conducted the round robin tests using the high Cr steels (Gr.91 and Gr.92 steels) and their welds as part of the VAMAS TWA31 collaboration.
Strength, Fracture and Complexity – IOS Press
Published: May 20, 2015
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