Room and elevated temperature Mechanical Behavior of 9-12% Cr Steels
The mechanical properties of medium Cr steels used in fossil fired power plants are very good because of their excellent high temperature microstructural stability. However, as the desire to increase the operating temperature (>650C) of the plant goes up, the need for steels that maintain their strength at these temperatures also increases. The mechanical properties of three medium Cr steels (0.08C-(9-12)Cr-1.2Ni-0.7Mo-3.0Cu-3.0Co-0.5Ti) were investigated through hardness, hot hardness and tensile measurements. The strength of the 9-12%Cr steels at room temperature after long-term isothermal aging (750C; 1000 hours) compares favorably with that of other power plant steels (e.g., P91). In addition, the elevated temperature strength and hot hardness also behave similarly. The mechanical behavior will be discussed in terms of the strength, elongation and tensile fracture characteristics.
- Research Organization:
- Albany Research Center (ARC), Albany, OR (United States)
- Sponsoring Organization:
- USDOE - Office of Fossil Energy (FE)
- OSTI ID:
- 899241
- Report Number(s):
- DOE/ARC-2005-076; TRN: US200708%%175
- Resource Relation:
- Conference: 134th TMS Annual Meeting & Exposition, San Francisco, CA, Feb. 13-17, 2005 (The Minerals, Metals & Materials Society); Related Information: Presentation only. Abstract published in program.
- Country of Publication:
- United States
- Language:
- English
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