Acceptable aluminum additions for minimal environmental effect in iron-aluminum alloys
- Oak Ridge National Lab., TN (United States)
- Carnegie-Mellon Univ., Pittsburgh, PA (United States)
A systematic study of iron-aluminum alloys has shown that Fe-16 at. % Al alloys are not very sensitive to environmental embrittlement. The Fe-22 and -28 at. % Al alloys are sensitive to environmental embrittlement, and the effect can be reduced by the addition of chromium and through the control of grain size by additions of zirconium and carbon. The Fe-16 at. % Al binary, and alloys based on it, yielded over 20% room-temperature (RT) elongation even after high-temperature annealing treatments at 1100{degree}C. The best values for the Fe-22 and -28 at. % Al-base alloys after similar annealing treatments were 5 and 10%, respectively. A multicomponent alloy, FAP, based on Fe- 16 at. % Al was designed, which gave an RT ductility of over 25%.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10127259
- Report Number(s):
- CONF-921206-10; ON: DE93006738
- Resource Relation:
- Conference: Materials Research Society (MRS) symposium,Boston, MA (United States),2-6 Dec 1992; Other Information: PBD: [1992]
- Country of Publication:
- United States
- Language:
- English
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