Martensitic transformation in Cu-Mn-Al alloys
- Comision Nacional de Energia Atomica, S.C. de Bariloche (Argentina)
The Cu-Mn-Al alloys exhibit, in a certain range of composition, an A2 (BCC) phase which is stable at high temperatures (around 1,050 K). Two ordering reactions take place on lowering the temperature A2 {yields} B2 and B2 {yields} L2{sub 1}, with a distribution of antiphase domains. Spinodal decomposition can be found in the as quenched specimen for some compositions, as shown by Sato et al. In addition a martensitic transformation can also occur, with an Ms strongly dependent on the composition. In this work the dependence of the Ms on composition is investigated, for alloy compositions along the Cu{sub 3} Al-Cu{sub 3}Mn{sub 2} line of the ternary phase diagram. The results, together with other data taken from the literature, are analyzed in terms of a model, based on the pair interchange energies, developed by Ahlers.
- OSTI ID:
- 237846
- Journal Information:
- Scripta Metallurgica et Materialia, Journal Name: Scripta Metallurgica et Materialia Journal Issue: 6 Vol. 33; ISSN SCRMEX; ISSN 0956-716X
- Country of Publication:
- United States
- Language:
- English
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