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1993

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/9908

Lattice-dynamical study of the premartensitic state of the Cu-Al-Be alloys

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http://dx.doi.org/10.1103/PhysRevB.48.15708

Abstract

Neutron-scattering techniques have been used to study the premartensitic state of a family of Cu-Al-Be alloys, which transform from the bcc phase to an 18R martensitic structure. We find that the phonon modes of the TA2[110] branch have very low energies with anomalous temperature dependence. A slight anomaly at q=2/3 was observed; this anomaly, however, does not change significantly with temperature. No elastic peaks, related to the martensite structure, were found in the premartensitic state of these alloys. The results are compared with measurements, performed under the same instrumental conditions, on two Cu-Al-Ni and a Cu-Zn-Al martensitic alloy.

Subject

Transformacions martensítiques, Transformacions de fase (Física estadística), Dispersió (Física nuclear), Fonons, Aliatges

Subject (English)

Martensitic transformations, Phase transformations (Statistical physics), Scattering (Physics), Phonons, Alloys

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

MAÑOSA, Lluís, et al. Lattice-dynamical study of the premartensitic state of the Cu-Al-Be alloys. Physical Review B. 1993. Vol. 48, num. 21, pags. 15708-15711. ISSN 0163-1829. [consulted: 7 of June of 2026]. Available at: https://hdl.handle.net/2445/9908

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