Effects of composition and heat treatment at 1150{degrees}C on creep-rupture properties of Fe{sub 3}Al-based alloys
The effects of composition and heat treatment at 1150{degrees}C on the creep-rupture properties of Fe{sub 3}Al-based alloys were studied. Tests of alloy FA-180 (Fe-28Al-5Cr-0.5Nb-0.8Mo-0.025Zr-0.05C-0.005B, at.%) with this heat treatment were performed in air using various test temperatures and stresses in order to obtain creep activation energies and constants. An activation energy for creep of approximately 150 kcal/mole was determined, value which is approximately twice that obtained earlier for the binary alloy heat treated at 750{degrees}C. Tests were also conducted on alloys containing various combinations of Cr, Mo, Nb, Zr, C, and B in order to better understand the effect of composition on the improved creep resistance with heat treating at 1150{degrees}C. The results suggest an interaction of Mo with Zr and Nb to produce increased creep life.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); American Cancer Society, New York, NY (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 162175
- Report Number(s):
- CONF-9505204-15; ON: DE96003028; TRN: 96:000752
- Resource Relation:
- Conference: 9. annual conference on fossil energy materials, Oak Ridge, TN (United States), 16-18 May 1995; Other Information: PBD: 1995
- Country of Publication:
- United States
- Language:
- English
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