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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/123286
Ver los metadatos del registro completo
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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 http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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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 |
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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 |
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openAccess |
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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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