Advances in materials technology for fossil power plants : by D Gandy; J Shingledecker; Ramaswamy Viswanathan; Electric

By D Gandy; J Shingledecker; Ramaswamy Viswanathan; Electric Power Research Institute.; et al

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Extra info for Advances in materials technology for fossil power plants : proceedings from the sixth International Conference, August 31-September 3, 2010, Santa Fe, New Mexico, USA

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Int. Conf. WELDS 2009, Design, Testing, Assessment, and Safety of High-Temperature Welded Structures, Fort Myers, Florida, June 24-26, (2009). 11. M. Takeyama, “Precipitation Behavior of Intermetallic Compound in Austenitic Steels”, KINZOKU (Metals), 76 (2006), 11-16. 12. K. Kurata, N. Takada, T. Matsuo and M. Takeyama, “ Effect of Grain Boundary Laves Phase Fe2Nb on Creep Resistance of Fe-20Cr-30Ni-2Nb Austenitic Heat Resistant Steel”, Report of the 123rd Committee on Heat Resisting Metals and Alloys, Japan Society for Promotion of Science, 49 (2008), 379-389.

Also, as clearly shown in Fig. 5, by taking advantage of the memory effect of retained austenite and undertaking heat treatment so as to maintain the original prior austenite grains, grain refinement is avoided in the HAZ even of 9%Cr steel not including boron, and creep strength is not declined (7). Fig. 4 Effect of nitrogen on creep properties of B-added 9Cr steel Fig. 5 Creep life vs. heating temperature relationship for FG HAZ and HAZ with memory effect 16 The foregoing observations reflect the results of laboratory research, but developed steels must conform to the composition ranges of specification, meaning that there are strict limitations on chemical composition and heat treatment conditions in the context of expressing desired creep strength.

M. Takeyama, “Precipitation Behavior of Intermetallic Compound in Austenitic Steels”, KINZOKU (Metals), 76 (2006), 11-16. 12. K. Kurata, N. Takada, T. Matsuo and M. Takeyama, “ Effect of Grain Boundary Laves Phase Fe2Nb on Creep Resistance of Fe-20Cr-30Ni-2Nb Austenitic Heat Resistant Steel”, Report of the 123rd Committee on Heat Resisting Metals and Alloys, Japan Society for Promotion of Science, 49 (2008), 379-389. 13. M. Yonemura, T. Hamaguchi, H. Semba and M. Igarashi, “Strengthening Factors Extraction and Observations of Microstructures with Creep Damages”, Preprint of First Symposium for Project on Fundamental Studies on Technology for Enhanced Strength and Functions, (2009), 77-78.

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