Volume diffusion of iron in Fe{sub 3}Al: Influence of ordering
Journal Article
·
· Acta Materialia
- Univ. Aix-Marseille III (France). Lab. de Metallurgie
- L. Kossuth Univ., Debrecen (Hungary). Dept. of Solid State Physics
The lattice self diffusion coefficient of {sup 59}Fe in Fe{sub 3}Al has been determined in the temperature range 847--1,503 K using the classical radio-tracer method. Below 1014 K the Arrhenius plot has a downwards curvature resulting from the B2 type of atomic ordering. The temperature dependence of the self-diffusion coefficient can be described by: D{sub v} = (3.2{sub {minus}1.5}{sup +2.8} {times} 10{sup {minus}5}) {times} exp({minus}(204 {+-} 6.1 kJ/mol) {times} (1 + (0.1 {+-} 0.03) {times} S{sup 2})/RT) (m{sup 2}/s) where S is the long-range order parameter.
- OSTI ID:
- 455255
- Journal Information:
- Acta Materialia, Journal Name: Acta Materialia Journal Issue: 2 Vol. 45; ISSN 1359-6454; ISSN ACMAFD
- Country of Publication:
- United States
- Language:
- English
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