Defects interaction processes in deformed high purity polycrystalline molybdenum at elevated temperatures
- Autores
- Lambri, Osvaldo Agustin F.; Bonifacich, Federico Guillermo; Bozzano, Patricia Beatriz; Zelada, Griselda Irene; Plazaola, F; García, J.A.
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Mechanical spectroscopy (damping and elastic modulus as a function of temperature) and transmission electron microscopy studies have been performed in high purity polycrystalline molybdenum plastically deformed to different values of tensile and torsion strain. Mechanical spectroscopy measurements were performed from room temperature up to 1285 K. A relaxation peak in polycrystalline molybdenum related to the movement of dislocations into lower energy configurations near grain boundaries has been discovered to appear around 1170 K. The activation energy of the peak is 4.2 eV ± 0.5 eV. This relaxation phenomenon involves the interaction between vacancies and mobile dislocations near the grain boundaries. It should be highlighted that this relaxation process is controlled by the arrangement of vacancies and dislocations which occur at temperature below 1070 K
Fil: Lambri, Osvaldo Agustin F.. Universidad Nacional de Rosario. Facultad de Cs.exactas Ingeniería y Agrimensura. No Declara. Laboratorio de Materiales Ceramicos; Argentina
Fil: Bonifacich, Federico Guillermo. Universidad Nacional de Rosario. Facultad de Cs.exactas Ingeniería y Agrimensura. No Declara. Laboratorio de Materiales Ceramicos; Argentina
Fil: Bozzano, Patricia Beatriz. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Zelada, Griselda Irene. Universidad Nacional de Rosario. Facultad de Cs.exactas Ingeniería y Agrimensura. No Declara. Laboratorio de Materiales Ceramicos; Argentina
Fil: Plazaola, F. Universidad del País Vasco; España
Fil: García, J.A.. Universidad del País Vasco; España - Materia
-
Molybdenum
Grain Boundary Dislocation Mobility
Vacancies
Mechanical Spectroscopy - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/30248
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Defects interaction processes in deformed high purity polycrystalline molybdenum at elevated temperaturesLambri, Osvaldo Agustin F.Bonifacich, Federico GuillermoBozzano, Patricia BeatrizZelada, Griselda IrenePlazaola, FGarcía, J.A.MolybdenumGrain Boundary Dislocation MobilityVacanciesMechanical SpectroscopyMechanical spectroscopy (damping and elastic modulus as a function of temperature) and transmission electron microscopy studies have been performed in high purity polycrystalline molybdenum plastically deformed to different values of tensile and torsion strain. Mechanical spectroscopy measurements were performed from room temperature up to 1285 K. A relaxation peak in polycrystalline molybdenum related to the movement of dislocations into lower energy configurations near grain boundaries has been discovered to appear around 1170 K. The activation energy of the peak is 4.2 eV ± 0.5 eV. This relaxation phenomenon involves the interaction between vacancies and mobile dislocations near the grain boundaries. It should be highlighted that this relaxation process is controlled by the arrangement of vacancies and dislocations which occur at temperature below 1070 KFil: Lambri, Osvaldo Agustin F.. Universidad Nacional de Rosario. Facultad de Cs.exactas Ingeniería y Agrimensura. No Declara. Laboratorio de Materiales Ceramicos; ArgentinaFil: Bonifacich, Federico Guillermo. Universidad Nacional de Rosario. Facultad de Cs.exactas Ingeniería y Agrimensura. No Declara. Laboratorio de Materiales Ceramicos; ArgentinaFil: Bozzano, Patricia Beatriz. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaFil: Zelada, Griselda Irene. Universidad Nacional de Rosario. Facultad de Cs.exactas Ingeniería y Agrimensura. No Declara. Laboratorio de Materiales Ceramicos; ArgentinaFil: Plazaola, F. Universidad del País Vasco; EspañaFil: García, J.A.. Universidad del País Vasco; EspañaElsevier Science2014-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/30248Lambri, Osvaldo Agustin F.; Bonifacich, Federico Guillermo; Bozzano, Patricia Beatriz; Zelada, Griselda Irene; Plazaola, F; et al.; Defects interaction processes in deformed high purity polycrystalline molybdenum at elevated temperatures; Elsevier Science; Journal of Nuclear Materials; 453; 1-3; 6-2014; 1-70022-3115CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jnucmat.2014.06.027info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0022311514003845info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:08:25Zoai:ri.conicet.gov.ar:11336/30248instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:08:26.133CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Defects interaction processes in deformed high purity polycrystalline molybdenum at elevated temperatures |
title |
Defects interaction processes in deformed high purity polycrystalline molybdenum at elevated temperatures |
spellingShingle |
Defects interaction processes in deformed high purity polycrystalline molybdenum at elevated temperatures Lambri, Osvaldo Agustin F. Molybdenum Grain Boundary Dislocation Mobility Vacancies Mechanical Spectroscopy |
title_short |
Defects interaction processes in deformed high purity polycrystalline molybdenum at elevated temperatures |
title_full |
Defects interaction processes in deformed high purity polycrystalline molybdenum at elevated temperatures |
title_fullStr |
Defects interaction processes in deformed high purity polycrystalline molybdenum at elevated temperatures |
title_full_unstemmed |
Defects interaction processes in deformed high purity polycrystalline molybdenum at elevated temperatures |
title_sort |
Defects interaction processes in deformed high purity polycrystalline molybdenum at elevated temperatures |
dc.creator.none.fl_str_mv |
Lambri, Osvaldo Agustin F. Bonifacich, Federico Guillermo Bozzano, Patricia Beatriz Zelada, Griselda Irene Plazaola, F García, J.A. |
author |
Lambri, Osvaldo Agustin F. |
author_facet |
Lambri, Osvaldo Agustin F. Bonifacich, Federico Guillermo Bozzano, Patricia Beatriz Zelada, Griselda Irene Plazaola, F García, J.A. |
author_role |
author |
author2 |
Bonifacich, Federico Guillermo Bozzano, Patricia Beatriz Zelada, Griselda Irene Plazaola, F García, J.A. |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Molybdenum Grain Boundary Dislocation Mobility Vacancies Mechanical Spectroscopy |
topic |
Molybdenum Grain Boundary Dislocation Mobility Vacancies Mechanical Spectroscopy |
dc.description.none.fl_txt_mv |
Mechanical spectroscopy (damping and elastic modulus as a function of temperature) and transmission electron microscopy studies have been performed in high purity polycrystalline molybdenum plastically deformed to different values of tensile and torsion strain. Mechanical spectroscopy measurements were performed from room temperature up to 1285 K. A relaxation peak in polycrystalline molybdenum related to the movement of dislocations into lower energy configurations near grain boundaries has been discovered to appear around 1170 K. The activation energy of the peak is 4.2 eV ± 0.5 eV. This relaxation phenomenon involves the interaction between vacancies and mobile dislocations near the grain boundaries. It should be highlighted that this relaxation process is controlled by the arrangement of vacancies and dislocations which occur at temperature below 1070 K Fil: Lambri, Osvaldo Agustin F.. Universidad Nacional de Rosario. Facultad de Cs.exactas Ingeniería y Agrimensura. No Declara. Laboratorio de Materiales Ceramicos; Argentina Fil: Bonifacich, Federico Guillermo. Universidad Nacional de Rosario. Facultad de Cs.exactas Ingeniería y Agrimensura. No Declara. Laboratorio de Materiales Ceramicos; Argentina Fil: Bozzano, Patricia Beatriz. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina Fil: Zelada, Griselda Irene. Universidad Nacional de Rosario. Facultad de Cs.exactas Ingeniería y Agrimensura. No Declara. Laboratorio de Materiales Ceramicos; Argentina Fil: Plazaola, F. Universidad del País Vasco; España Fil: García, J.A.. Universidad del País Vasco; España |
description |
Mechanical spectroscopy (damping and elastic modulus as a function of temperature) and transmission electron microscopy studies have been performed in high purity polycrystalline molybdenum plastically deformed to different values of tensile and torsion strain. Mechanical spectroscopy measurements were performed from room temperature up to 1285 K. A relaxation peak in polycrystalline molybdenum related to the movement of dislocations into lower energy configurations near grain boundaries has been discovered to appear around 1170 K. The activation energy of the peak is 4.2 eV ± 0.5 eV. This relaxation phenomenon involves the interaction between vacancies and mobile dislocations near the grain boundaries. It should be highlighted that this relaxation process is controlled by the arrangement of vacancies and dislocations which occur at temperature below 1070 K |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-06 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/30248 Lambri, Osvaldo Agustin F.; Bonifacich, Federico Guillermo; Bozzano, Patricia Beatriz; Zelada, Griselda Irene; Plazaola, F; et al.; Defects interaction processes in deformed high purity polycrystalline molybdenum at elevated temperatures; Elsevier Science; Journal of Nuclear Materials; 453; 1-3; 6-2014; 1-7 0022-3115 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/30248 |
identifier_str_mv |
Lambri, Osvaldo Agustin F.; Bonifacich, Federico Guillermo; Bozzano, Patricia Beatriz; Zelada, Griselda Irene; Plazaola, F; et al.; Defects interaction processes in deformed high purity polycrystalline molybdenum at elevated temperatures; Elsevier Science; Journal of Nuclear Materials; 453; 1-3; 6-2014; 1-7 0022-3115 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jnucmat.2014.06.027 info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0022311514003845 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science |
publisher.none.fl_str_mv |
Elsevier Science |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613951515525120 |
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13.070432 |