Compositional limit between the formation of a high entropy alloy and intermetallic compounds in MnCoFeGe(Si) alloys obtained by mechanical alloying

A single BCC solid solution was formed after thermal treatment of an amorphous precursor MnCo0.8Fe0.2Ge0.5 obtained by mechanical alloying, demonstrating the formation of high entropy alloys (HEAs) beyond conventional thermodynamic stability criteria. Although X-ray diffraction analysis shows no cha...

Full description

Bibliographic Details
Authors: Vidal-Crespo, Antonio, Ipus, Jhon J., Blázquez, Javier S.
Format: article
Status:Published version
Publication Date:2025
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/414306
Online Access:http://hdl.handle.net/10261/414306
https://api.elsevier.com/content/abstract/scopus_id/105023498334
Access Level:Open access
Keyword:High entropy alloys
Martensite
Mechanical alloying
Mössbauer spectroscopy
id ES_ceab2aeb7302e29667cbce48a8fc03cd
oai_identifier_str oai:digital.csic.es:10261/414306
network_acronym_str ES
network_name_str España
repository_id_str
spelling Compositional limit between the formation of a high entropy alloy and intermetallic compounds in MnCoFeGe(Si) alloys obtained by mechanical alloyingVidal-Crespo, AntonioIpus, Jhon J.Blázquez, Javier S.High entropy alloysMartensiteMechanical alloyingMössbauer spectroscopyA single BCC solid solution was formed after thermal treatment of an amorphous precursor MnCo0.8Fe0.2Ge0.5 obtained by mechanical alloying, demonstrating the formation of high entropy alloys (HEAs) beyond conventional thermodynamic stability criteria. Although X-ray diffraction analysis shows no changes in phase identification, Mössbauer spectroscopy and magnetization measurements of thermally treated samples reveal a strong dependence of the local environment of Fe atoms on the thermal treatment conditions. These results suggest the coexistence of disordered BCC and ordered B2 structures. The addition of Si to these systems leads to the formation of intermetallic compounds, including the coexistence of austenite and martensite. The MnCo0.8Fe0.2Ge0.5Six series (x = 0, 0.25 and 0.50) was studied, establishing the compositional limit between the formation of a high entropy alloy and intermetallic phases in the range 0.25 < x < 0.50.This research was funded by the VI and VII-PPIT-US from Universidad de Sevilla (Spain). A. Vidal-Crespo acknowledges the financial support of the VI-PPIT-US from Universidad de Sevilla (Spain).Peer reviewedElsevierUniversidad de SevillaVidal-Crespo, Antonio [0000-0002-6633-9459]Ipus, Jhon J. [0000-0002-5402-6164]Blázquez, Javier S. [0000-0003-2318-5418]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/414306https://api.elsevier.com/content/abstract/scopus_id/105023498334reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.jallcom.2025.185353Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4143062026-05-22T06:33:51Z
dc.title.none.fl_str_mv Compositional limit between the formation of a high entropy alloy and intermetallic compounds in MnCoFeGe(Si) alloys obtained by mechanical alloying
title Compositional limit between the formation of a high entropy alloy and intermetallic compounds in MnCoFeGe(Si) alloys obtained by mechanical alloying
spellingShingle Compositional limit between the formation of a high entropy alloy and intermetallic compounds in MnCoFeGe(Si) alloys obtained by mechanical alloying
Vidal-Crespo, Antonio
High entropy alloys
Martensite
Mechanical alloying
Mössbauer spectroscopy
title_short Compositional limit between the formation of a high entropy alloy and intermetallic compounds in MnCoFeGe(Si) alloys obtained by mechanical alloying
title_full Compositional limit between the formation of a high entropy alloy and intermetallic compounds in MnCoFeGe(Si) alloys obtained by mechanical alloying
title_fullStr Compositional limit between the formation of a high entropy alloy and intermetallic compounds in MnCoFeGe(Si) alloys obtained by mechanical alloying
title_full_unstemmed Compositional limit between the formation of a high entropy alloy and intermetallic compounds in MnCoFeGe(Si) alloys obtained by mechanical alloying
title_sort Compositional limit between the formation of a high entropy alloy and intermetallic compounds in MnCoFeGe(Si) alloys obtained by mechanical alloying
dc.creator.none.fl_str_mv Vidal-Crespo, Antonio
Ipus, Jhon J.
Blázquez, Javier S.
author Vidal-Crespo, Antonio
author_facet Vidal-Crespo, Antonio
Ipus, Jhon J.
Blázquez, Javier S.
author_role author
author2 Ipus, Jhon J.
Blázquez, Javier S.
author2_role author
author
dc.contributor.none.fl_str_mv Universidad de Sevilla
Vidal-Crespo, Antonio [0000-0002-6633-9459]
Ipus, Jhon J. [0000-0002-5402-6164]
Blázquez, Javier S. [0000-0003-2318-5418]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv High entropy alloys
Martensite
Mechanical alloying
Mössbauer spectroscopy
topic High entropy alloys
Martensite
Mechanical alloying
Mössbauer spectroscopy
description A single BCC solid solution was formed after thermal treatment of an amorphous precursor MnCo0.8Fe0.2Ge0.5 obtained by mechanical alloying, demonstrating the formation of high entropy alloys (HEAs) beyond conventional thermodynamic stability criteria. Although X-ray diffraction analysis shows no changes in phase identification, Mössbauer spectroscopy and magnetization measurements of thermally treated samples reveal a strong dependence of the local environment of Fe atoms on the thermal treatment conditions. These results suggest the coexistence of disordered BCC and ordered B2 structures. The addition of Si to these systems leads to the formation of intermetallic compounds, including the coexistence of austenite and martensite. The MnCo0.8Fe0.2Ge0.5Six series (x = 0, 0.25 and 0.50) was studied, establishing the compositional limit between the formation of a high entropy alloy and intermetallic phases in the range 0.25 < x < 0.50.
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/414306
https://api.elsevier.com/content/abstract/scopus_id/105023498334
url http://hdl.handle.net/10261/414306
https://api.elsevier.com/content/abstract/scopus_id/105023498334
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.jallcom.2025.185353
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869420012040617984
score 15,81155

Similar Items