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

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 slig...

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Detalles Bibliográficos
Autores: Mañosa, Lluís, Zarestky, Jerel L., Lograsso, T. A., Delaney, D. W., Stassis, C.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1993
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/9908
Acceso en línea:https://hdl.handle.net/2445/9908
Access Level:acceso abierto
Palabra clave:Transformacions martensítiques
Transformacions de fase (Física estadística)
Dispersió (Física nuclear)
Fonons
Aliatges
Martensitic transformations
Phase transformations (Statistical physics)
Scattering (Physics)
Phonons
Alloys
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spelling Lattice-dynamical study of the premartensitic state of the Cu-Al-Be alloysMañosa, LluísZarestky, Jerel L.Lograsso, T. A.Delaney, D. W.Stassis, C.Transformacions martensítiquesTransformacions de fase (Física estadística)Dispersió (Física nuclear)FononsAliatgesMartensitic transformationsPhase transformations (Statistical physics)Scattering (Physics)PhononsAlloysNeutron-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.The American Physical Society1993info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/9908Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.48.15708Physical Review B, 1993, vol. 48, núm. 21, p. 15708-15711.http://dx.doi.org/10.1103/PhysRevB.48.15708(c) The American Physical Society, 1993info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/99082026-05-27T06:46:51Z
dc.title.none.fl_str_mv Lattice-dynamical study of the premartensitic state of the Cu-Al-Be alloys
title Lattice-dynamical study of the premartensitic state of the Cu-Al-Be alloys
spellingShingle Lattice-dynamical study of the premartensitic state of the Cu-Al-Be alloys
Mañosa, Lluís
Transformacions martensítiques
Transformacions de fase (Física estadística)
Dispersió (Física nuclear)
Fonons
Aliatges
Martensitic transformations
Phase transformations (Statistical physics)
Scattering (Physics)
Phonons
Alloys
title_short Lattice-dynamical study of the premartensitic state of the Cu-Al-Be alloys
title_full Lattice-dynamical study of the premartensitic state of the Cu-Al-Be alloys
title_fullStr Lattice-dynamical study of the premartensitic state of the Cu-Al-Be alloys
title_full_unstemmed Lattice-dynamical study of the premartensitic state of the Cu-Al-Be alloys
title_sort Lattice-dynamical study of the premartensitic state of the Cu-Al-Be alloys
dc.creator.none.fl_str_mv Mañosa, Lluís
Zarestky, Jerel L.
Lograsso, T. A.
Delaney, D. W.
Stassis, C.
author Mañosa, Lluís
author_facet Mañosa, Lluís
Zarestky, Jerel L.
Lograsso, T. A.
Delaney, D. W.
Stassis, C.
author_role author
author2 Zarestky, Jerel L.
Lograsso, T. A.
Delaney, D. W.
Stassis, C.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Transformacions martensítiques
Transformacions de fase (Física estadística)
Dispersió (Física nuclear)
Fonons
Aliatges
Martensitic transformations
Phase transformations (Statistical physics)
Scattering (Physics)
Phonons
Alloys
topic Transformacions martensítiques
Transformacions de fase (Física estadística)
Dispersió (Física nuclear)
Fonons
Aliatges
Martensitic transformations
Phase transformations (Statistical physics)
Scattering (Physics)
Phonons
Alloys
description 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.
publishDate 1993
dc.date.none.fl_str_mv 1993
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/9908
url https://hdl.handle.net/2445/9908
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.48.15708
Physical Review B, 1993, vol. 48, núm. 21, p. 15708-15711.
http://dx.doi.org/10.1103/PhysRevB.48.15708
dc.rights.none.fl_str_mv (c) The American Physical Society, 1993
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) The American Physical Society, 1993
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv The American Physical Society
publisher.none.fl_str_mv The American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869423904185909248
score 15,301603

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