Production of iron aluminides by co-rolling of elemental foils followed by heat treatment
- Univ. of Sheffield (United Kingdom). Dept. of Engineering Materials
Iron aluminides are of interest as structural intermetallics because of their lower cost, reduced density, conservation of strategic elements and improved resistance to oxidizing and sulfidizing environments compared with chromium-containing ferritic stainless steels. Available methods of forming them from the melt include ingot solidification followed by thermomechanical processing, atomization to powder followed by consolidation, spinning to wire or ribbon and spray deposition to a preform. These may be compared with basically solid state methods such as sintering, hot-pressing or milling of elemental powders or diffusional heat treatment of bilayer or multilayer elemental films or sheets, or of elemental filaments embedded in a matrix of the other element. The present purpose is to report preliminary results on the formation of iron aluminides by diffusional heat treatment of co-rolled iron and aluminum foils. This approach has been used previously to generate amorphous phases in the Ni/Zr and Cu/Zr systems and to form NiAl from nickel and aluminium foils, but it appears not to have been reported before as a route to formation of iron aluminides.
- OSTI ID:
- 215343
- Journal Information:
- Scripta Materialia, Vol. 34, Issue 5; Other Information: PBD: 1 Mar 1996
- Country of Publication:
- United States
- Language:
- English
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