Zero temperature analysis of the defect structure of B2 FeAl alloys
- Analex Corp., Brook Park, OH (United States)
- National Aeronautics and Space Administration, Cleveland, OH (United States)
- Univ. Nacional Autonoma de Mexico, Distrito Federal (Mexico). Facultad de Quimica
The defect structure of B2 FeAl has been the subject of several experimental and more numerous but conflicting theoretical studies. The purpose of this paper is to provide an overall analysis of several issues concerning FeAl alloys, based on results of a recently developed semiempirical method. Among other issues, some studies support the contention that FeAl is a triple defect forming compound. For Fe-rich alloys, the Al-sublattice is always fully occupied, therefore, when an excess of Fe occurs it will substitute on Al sites with no significant composition dependent vacancy concentration occurring on either sublattice. But with excess Al, vacant sites or constitutional vacancies are formed in the Fe sublattice.
- OSTI ID:
- 460432
- Journal Information:
- Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 7 Vol. 36; ISSN 1359-6462; ISSN SCMAF7
- Country of Publication:
- United States
- Language:
- English
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