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Title: Lattice-dynamical study of the premartensitic state of the Cu-Al-Be alloys
Author: Mañosa, Lluís
Zarestky, Jerel L.
Lograsso, T. A.
Delaney, D. W.
Stassis, C.
Keywords: Transformacions martensítiques
Transformacions de fase (Física estadística)
Dispersió (Física nuclear)
Martensitic transformations
Phase transformations (Statistical physics)
Scattering (Physics)
Issue Date: 1993
Publisher: The American Physical Society
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.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review B, 1993, vol. 48, núm. 21, p. 15708-15711.
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ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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