Mössbauer Effect Studies of Fe–Base Alloys during Mechanical Alloying and Grinding (Overview)

Autores
Cabrera, Alejandra Fabiana; Fernández van Raap, Marcela Beatriz; Meyer, Marcos; Rodríguez Torres, Claudia Elena; Mendoza Zélis, Luis Alejandro; Sánchez, Francisco Homero
Año de publicación
1995
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Mossbauer effect studies of mechanical alloying and mechanical grinding of Fe-B, Fe-Sn and Fe-TM-Al (TM = Ni, Cu), complemented by X-ray diffraction analysis are presented. Some of these systems (Fe-Sn) are especially suited for these type of research because the environments of both elements can be probed. In all cases powders were processed with a Retsch MM 2 horizontal vibratory mill under argon atmosphere. In Fe 1-x Sn x (0.15 ≤ x ≤ 0.40), the evolution of mechanical alloying with time and the dependence of the stationary state with composition were investigated. An intermediate superparamagnetic FeSn 2 state and a stationary bcc solid solution with composition fluctuations were inferred from the Mossbauer spectra. Solubility of tin into bcc iron was found to be extended up to a maximum of about 22 at.%. Pure powder mixtures of nominal composition Al 75 Ni 10 Fe 15 , Al 65 Ni 20 Fe 15 and Al 63 Cu 25 Fe 12 have been mechanically alloyed. Stable disordered crystalline phases were obtained after milling and, in some cases, the partial ordering of bcc structures induced by milling was observed. Further annealings did not produce structural changes but removed the remaining disorder. The characteristic quadrupole interaction parameters were obtained by Mossbauer spectroscopy. The evolution of Fe 2 B with grinding time was studied. The first milling stage was characterized by fragmentation and accumulation of strain. On further processing, segregation of α-Fe occurred while grain size reduction continued and strain was partially removed. For longer grinding times separation of α-Fe proceeded at an almost steady rate. Two additional experiments designed to reduce and increase oxygen contamination let us tentatively discard this element as the main responsible for the observed decomposition.
Facultad de Ciencias Exactas
Materia
Física
Mössbauer effect
Iron-Tin
Aluminum-Copper-Iron
Iron-Boron
Solid solutions
Local atomic environments
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/123286

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oai_identifier_str oai:sedici.unlp.edu.ar:10915/123286
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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Mössbauer Effect Studies of Fe–Base Alloys during Mechanical Alloying and Grinding (Overview)Cabrera, Alejandra FabianaFernández van Raap, Marcela BeatrizMeyer, MarcosRodríguez Torres, Claudia ElenaMendoza Zélis, Luis AlejandroSánchez, Francisco HomeroFísicaMössbauer effectIron-TinAluminum-Copper-IronIron-BoronSolid solutionsLocal atomic environmentsMossbauer effect studies of mechanical alloying and mechanical grinding of Fe-B, Fe-Sn and Fe-TM-Al (TM = Ni, Cu), complemented by X-ray diffraction analysis are presented. Some of these systems (Fe-Sn) are especially suited for these type of research because the environments of both elements can be probed. In all cases powders were processed with a Retsch MM 2 horizontal vibratory mill under argon atmosphere. In Fe 1-x Sn x (0.15 ≤ x ≤ 0.40), the evolution of mechanical alloying with time and the dependence of the stationary state with composition were investigated. An intermediate superparamagnetic FeSn 2 state and a stationary bcc solid solution with composition fluctuations were inferred from the Mossbauer spectra. Solubility of tin into bcc iron was found to be extended up to a maximum of about 22 at.%. Pure powder mixtures of nominal composition Al 75 Ni 10 Fe 15 , Al 65 Ni 20 Fe 15 and Al 63 Cu 25 Fe 12 have been mechanically alloyed. Stable disordered crystalline phases were obtained after milling and, in some cases, the partial ordering of bcc structures induced by milling was observed. Further annealings did not produce structural changes but removed the remaining disorder. The characteristic quadrupole interaction parameters were obtained by Mossbauer spectroscopy. The evolution of Fe 2 B with grinding time was studied. The first milling stage was characterized by fragmentation and accumulation of strain. On further processing, segregation of α-Fe occurred while grain size reduction continued and strain was partially removed. For longer grinding times separation of α-Fe proceeded at an almost steady rate. Two additional experiments designed to reduce and increase oxygen contamination let us tentatively discard this element as the main responsible for the observed decomposition.Facultad de Ciencias Exactas1995info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf357-364http://sedici.unlp.edu.ar/handle/10915/123286enginfo:eu-repo/semantics/altIdentifier/issn/0916-1821info:eu-repo/semantics/altIdentifier/issn/2432-471Xinfo:eu-repo/semantics/altIdentifier/doi/10.2320/matertrans1989.36.357info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:29:14Zoai:sedici.unlp.edu.ar:10915/123286Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:29:15.229SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Mössbauer Effect Studies of Fe–Base Alloys during Mechanical Alloying and Grinding (Overview)
title Mössbauer Effect Studies of Fe–Base Alloys during Mechanical Alloying and Grinding (Overview)
spellingShingle Mössbauer Effect Studies of Fe–Base Alloys during Mechanical Alloying and Grinding (Overview)
Cabrera, Alejandra Fabiana
Física
Mössbauer effect
Iron-Tin
Aluminum-Copper-Iron
Iron-Boron
Solid solutions
Local atomic environments
title_short Mössbauer Effect Studies of Fe–Base Alloys during Mechanical Alloying and Grinding (Overview)
title_full Mössbauer Effect Studies of Fe–Base Alloys during Mechanical Alloying and Grinding (Overview)
title_fullStr Mössbauer Effect Studies of Fe–Base Alloys during Mechanical Alloying and Grinding (Overview)
title_full_unstemmed Mössbauer Effect Studies of Fe–Base Alloys during Mechanical Alloying and Grinding (Overview)
title_sort Mössbauer Effect Studies of Fe–Base Alloys during Mechanical Alloying and Grinding (Overview)
dc.creator.none.fl_str_mv Cabrera, Alejandra Fabiana
Fernández van Raap, Marcela Beatriz
Meyer, Marcos
Rodríguez Torres, Claudia Elena
Mendoza Zélis, Luis Alejandro
Sánchez, Francisco Homero
author Cabrera, Alejandra Fabiana
author_facet Cabrera, Alejandra Fabiana
Fernández van Raap, Marcela Beatriz
Meyer, Marcos
Rodríguez Torres, Claudia Elena
Mendoza Zélis, Luis Alejandro
Sánchez, Francisco Homero
author_role author
author2 Fernández van Raap, Marcela Beatriz
Meyer, Marcos
Rodríguez Torres, Claudia Elena
Mendoza Zélis, Luis Alejandro
Sánchez, Francisco Homero
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Física
Mössbauer effect
Iron-Tin
Aluminum-Copper-Iron
Iron-Boron
Solid solutions
Local atomic environments
topic Física
Mössbauer effect
Iron-Tin
Aluminum-Copper-Iron
Iron-Boron
Solid solutions
Local atomic environments
dc.description.none.fl_txt_mv Mossbauer effect studies of mechanical alloying and mechanical grinding of Fe-B, Fe-Sn and Fe-TM-Al (TM = Ni, Cu), complemented by X-ray diffraction analysis are presented. Some of these systems (Fe-Sn) are especially suited for these type of research because the environments of both elements can be probed. In all cases powders were processed with a Retsch MM 2 horizontal vibratory mill under argon atmosphere. In Fe 1-x Sn x (0.15 ≤ x ≤ 0.40), the evolution of mechanical alloying with time and the dependence of the stationary state with composition were investigated. An intermediate superparamagnetic FeSn 2 state and a stationary bcc solid solution with composition fluctuations were inferred from the Mossbauer spectra. Solubility of tin into bcc iron was found to be extended up to a maximum of about 22 at.%. Pure powder mixtures of nominal composition Al 75 Ni 10 Fe 15 , Al 65 Ni 20 Fe 15 and Al 63 Cu 25 Fe 12 have been mechanically alloyed. Stable disordered crystalline phases were obtained after milling and, in some cases, the partial ordering of bcc structures induced by milling was observed. Further annealings did not produce structural changes but removed the remaining disorder. The characteristic quadrupole interaction parameters were obtained by Mossbauer spectroscopy. The evolution of Fe 2 B with grinding time was studied. The first milling stage was characterized by fragmentation and accumulation of strain. On further processing, segregation of α-Fe occurred while grain size reduction continued and strain was partially removed. For longer grinding times separation of α-Fe proceeded at an almost steady rate. Two additional experiments designed to reduce and increase oxygen contamination let us tentatively discard this element as the main responsible for the observed decomposition.
Facultad de Ciencias Exactas
description Mossbauer effect studies of mechanical alloying and mechanical grinding of Fe-B, Fe-Sn and Fe-TM-Al (TM = Ni, Cu), complemented by X-ray diffraction analysis are presented. Some of these systems (Fe-Sn) are especially suited for these type of research because the environments of both elements can be probed. In all cases powders were processed with a Retsch MM 2 horizontal vibratory mill under argon atmosphere. In Fe 1-x Sn x (0.15 ≤ x ≤ 0.40), the evolution of mechanical alloying with time and the dependence of the stationary state with composition were investigated. An intermediate superparamagnetic FeSn 2 state and a stationary bcc solid solution with composition fluctuations were inferred from the Mossbauer spectra. Solubility of tin into bcc iron was found to be extended up to a maximum of about 22 at.%. Pure powder mixtures of nominal composition Al 75 Ni 10 Fe 15 , Al 65 Ni 20 Fe 15 and Al 63 Cu 25 Fe 12 have been mechanically alloyed. Stable disordered crystalline phases were obtained after milling and, in some cases, the partial ordering of bcc structures induced by milling was observed. Further annealings did not produce structural changes but removed the remaining disorder. The characteristic quadrupole interaction parameters were obtained by Mossbauer spectroscopy. The evolution of Fe 2 B with grinding time was studied. The first milling stage was characterized by fragmentation and accumulation of strain. On further processing, segregation of α-Fe occurred while grain size reduction continued and strain was partially removed. For longer grinding times separation of α-Fe proceeded at an almost steady rate. Two additional experiments designed to reduce and increase oxygen contamination let us tentatively discard this element as the main responsible for the observed decomposition.
publishDate 1995
dc.date.none.fl_str_mv 1995
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/123286
url http://sedici.unlp.edu.ar/handle/10915/123286
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0916-1821
info:eu-repo/semantics/altIdentifier/issn/2432-471X
info:eu-repo/semantics/altIdentifier/doi/10.2320/matertrans1989.36.357
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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