The influence of {beta} phase aging on the martensitic transformation temperatures of CuMnAl alloys
- Comision Nacional de Energia Atomica, San Carlos de Bariloche (Argentina)
Alloys with the composition along the line Cu{sub 3}Al-Cu{sub 3}Mn{sub 2} retain their high temperature {beta} phase when quenched into water at room temperature from the homogenization temperature 1,123 K. During the quenching the {beta} phase orders with the sequence A2 {leftrightarrow} B2 {leftrightarrow} L2{sub 1}. These alloys transform from {beta}(bcc) to 2H or 18R martensite as has been reported before. In this work it will be shown that the M{sub s} (temperature at which martensite starts to form) measured in the as quenched alloys are quite different from those corresponding to ordered alloys. Measured differences between the M{sub s} temperature after room temperature aging and after 373 K aging will be presented, and these values will be compared with calculated differences in terms of energies of reordering of atomic pairs in CuMnAl alloys.
- OSTI ID:
- 603863
- Journal Information:
- Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 3 Vol. 38; ISSN 1359-6462; ISSN SCMAF7
- Country of Publication:
- United States
- Language:
- English
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