Creep-fatigue properties of candidate materials of 700°C-USC boiler are investigated. The candidate materials are Alloy 230, Alloy 263, Alloy 617 and HR6W. Creep-fatigue tests were conducted at 700°C and the effect of both strain range and hold time were studied. Experimental results showed that at 1.0% strain range, cycles to failure with 60 min strain holding is about 10% of that without strain holding, but at 0.7% strain range, cycles to failure with 60 min strain holding decreases down to about 1% of without strain holding. It appears that cycles to failure is decreased by increasing strain holding time at all tested strain ranges, and the effect of holding time is emphasized at small strain range. These phenomena depend on the kind of alloys.
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ASME 2007 Pressure Vessels and Piping Conference
July 22–26, 2007
San Antonio, Texas, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4287-8
PROCEEDINGS PAPER
Creep-Fatigue Properties of the Candidate Materials of 700°C-USC Boiler
Keiji Kubushiro,
Keiji Kubushiro
Ishikawajima-Harima Heavy Industries Company, Ltd., Tokyo, Japan
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Hiroki Yoshizawa,
Hiroki Yoshizawa
Ishikawajima-Harima Heavy Industries Company, Ltd., Yokohama, Japan
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Takuya Itou,
Takuya Itou
Ishikawajima-Harima Heavy Industries Company, Ltd., Tokyo, Japan
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Hirokatsu Nakagawa
Hirokatsu Nakagawa
Ishikawajima-Harima Heavy Industries Company, Ltd., Tokyo, Japan
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Keiji Kubushiro
Ishikawajima-Harima Heavy Industries Company, Ltd., Tokyo, Japan
Hiroki Yoshizawa
Ishikawajima-Harima Heavy Industries Company, Ltd., Yokohama, Japan
Takuya Itou
Ishikawajima-Harima Heavy Industries Company, Ltd., Tokyo, Japan
Hirokatsu Nakagawa
Ishikawajima-Harima Heavy Industries Company, Ltd., Tokyo, Japan
Paper No:
CREEP2007-26568, pp. 275-279; 5 pages
Published Online:
August 20, 2009
Citation
Kubushiro, K, Yoshizawa, H, Itou, T, & Nakagawa, H. "Creep-Fatigue Properties of the Candidate Materials of 700°C-USC Boiler." Proceedings of the ASME 2007 Pressure Vessels and Piping Conference. Volume 9: Eighth International Conference on Creep and Fatigue at Elevated Temperatures. San Antonio, Texas, USA. July 22–26, 2007. pp. 275-279. ASME. https://doi.org/10.1115/CREEP2007-26568
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