Phase formation maps in Zr48Cu46.5Al4Nb1.5 bulk metallic glass composites as a function of cooling rate and oxygen concentration

Detalhes bibliográficos
Autor(a) principal: Campos Neto, Nelson Delfino de
Data de Publicação: 2019
Outros Autores: Pereira, Flavio Soares, Antonio, Selma Gutierrez [UNESP], Guo, Yaofeng, Clarke, Amy J., Kaufrnan, Michael J., Oliveira, Marcelo Falcao de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.matchar.2019.109932
http://hdl.handle.net/11449/195057
Resumo: A design of experiments (DoE) approach was employed to systematically characterize the effects of both oxygen concentration and cooling rate on the amorphous and crystalline phase fractions in the Zr48Cu46.5Al4Nb1.5 bulk metallic glass composite (BMGC) alloy. Specifically, four distinct oxygen concentrations and five distinct cooling rates were used. Phase quantification was achieved using Rietveld refinement of synchrotron X-ray diffraction (XRD) data. Electron probe microanalysis (EPMA) using wavelength dispersive spectroscopy (WDS) revealed that the big-cube crystalline phase may scavenge oxygen from the amorphous matrix of a 2864 +/- 47 wppm oxygen sample. Transmission electron microscopy (TEM) of the alloy containing 340 +/- 25 wppm oxygen revealed the presence of an amorphous matrix with partially-transformed colonies of B2 (Pm-3m) where the transformation product was a B19' superstructure (Cm space group) instead of the more common B19' superstructure (P2(1)/m space group); this was in agreement with the Rietveld refinement results. An orientation relationship between the B2 and B19' phases was observed as expected. Finally, it was possible to produce thicker sections (5 mm vs. 3.5 mm) with the desired composite structure ( similar to 80% amorphous fraction with similar to 20% B2/ B19') compared with previous BMGC studies on similar compositions.
id UNSP_5e81cb71a4d9c9243396abc1b6843bef
oai_identifier_str oai:repositorio.unesp.br:11449/195057
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling Phase formation maps in Zr48Cu46.5Al4Nb1.5 bulk metallic glass composites as a function of cooling rate and oxygen concentrationBulk metallic glass compositesOxygenCooling ratesynchrotron XRDRietveld refinementTEMA design of experiments (DoE) approach was employed to systematically characterize the effects of both oxygen concentration and cooling rate on the amorphous and crystalline phase fractions in the Zr48Cu46.5Al4Nb1.5 bulk metallic glass composite (BMGC) alloy. Specifically, four distinct oxygen concentrations and five distinct cooling rates were used. Phase quantification was achieved using Rietveld refinement of synchrotron X-ray diffraction (XRD) data. Electron probe microanalysis (EPMA) using wavelength dispersive spectroscopy (WDS) revealed that the big-cube crystalline phase may scavenge oxygen from the amorphous matrix of a 2864 +/- 47 wppm oxygen sample. Transmission electron microscopy (TEM) of the alloy containing 340 +/- 25 wppm oxygen revealed the presence of an amorphous matrix with partially-transformed colonies of B2 (Pm-3m) where the transformation product was a B19' superstructure (Cm space group) instead of the more common B19' superstructure (P2(1)/m space group); this was in agreement with the Rietveld refinement results. An orientation relationship between the B2 and B19' phases was observed as expected. Finally, it was possible to produce thicker sections (5 mm vs. 3.5 mm) with the desired composite structure ( similar to 80% amorphous fraction with similar to 20% B2/ B19') compared with previous BMGC studies on similar compositions.Boeing Research & Technology Brazil (BRT-Brazil)Center for Advanced Non-Ferrous Structural Alloys (CANFSA), a National Science Foundation Industry/University Cooperative Research Center (I/UCRC) at the Colorado School of MinesUniv Sao Paulo, Dept Mat Engn, Sao Carlos Sch Engn, Joao Dagnone Ave 1100, BR-13563120 Sao Carlos, SP, BrazilColorado Sch Mines, George S Ansell Dept Met & Mat Engn, 1500 Illinois St, Golden, CO 80401 USAPaulista State Univ Julio de Mesquita Filho, Chem Inst Araraquara, Francisco Degni St 55, BR-14800900 Araraquara, SP, BrazilPaulista State Univ Julio de Mesquita Filho, Chem Inst Araraquara, Francisco Degni St 55, BR-14800900 Araraquara, SP, BrazilCenter for Advanced Non-Ferrous Structural Alloys (CANFSA), a National Science Foundation Industry/University Cooperative Research Center (I/UCRC) at the Colorado School of Mines: 1624836Elsevier B.V.Universidade de São Paulo (USP)Colorado Sch MinesUniversidade Estadual Paulista (Unesp)Campos Neto, Nelson Delfino dePereira, Flavio SoaresAntonio, Selma Gutierrez [UNESP]Guo, YaofengClarke, Amy J.Kaufrnan, Michael J.Oliveira, Marcelo Falcao de2020-12-10T17:03:15Z2020-12-10T17:03:15Z2019-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article7http://dx.doi.org/10.1016/j.matchar.2019.109932Materials Characterization. New York: Elsevier Science Inc, v. 158, 7 p., 2019.1044-5803http://hdl.handle.net/11449/19505710.1016/j.matchar.2019.109932WOS:000503314000048Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Characterizationinfo:eu-repo/semantics/openAccess2021-10-23T04:24:37Zoai:repositorio.unesp.br:11449/195057Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T04:24:37Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Phase formation maps in Zr48Cu46.5Al4Nb1.5 bulk metallic glass composites as a function of cooling rate and oxygen concentration
title Phase formation maps in Zr48Cu46.5Al4Nb1.5 bulk metallic glass composites as a function of cooling rate and oxygen concentration
spellingShingle Phase formation maps in Zr48Cu46.5Al4Nb1.5 bulk metallic glass composites as a function of cooling rate and oxygen concentration
Campos Neto, Nelson Delfino de
Bulk metallic glass composites
Oxygen
Cooling rate
synchrotron XRD
Rietveld refinement
TEM
title_short Phase formation maps in Zr48Cu46.5Al4Nb1.5 bulk metallic glass composites as a function of cooling rate and oxygen concentration
title_full Phase formation maps in Zr48Cu46.5Al4Nb1.5 bulk metallic glass composites as a function of cooling rate and oxygen concentration
title_fullStr Phase formation maps in Zr48Cu46.5Al4Nb1.5 bulk metallic glass composites as a function of cooling rate and oxygen concentration
title_full_unstemmed Phase formation maps in Zr48Cu46.5Al4Nb1.5 bulk metallic glass composites as a function of cooling rate and oxygen concentration
title_sort Phase formation maps in Zr48Cu46.5Al4Nb1.5 bulk metallic glass composites as a function of cooling rate and oxygen concentration
author Campos Neto, Nelson Delfino de
author_facet Campos Neto, Nelson Delfino de
Pereira, Flavio Soares
Antonio, Selma Gutierrez [UNESP]
Guo, Yaofeng
Clarke, Amy J.
Kaufrnan, Michael J.
Oliveira, Marcelo Falcao de
author_role author
author2 Pereira, Flavio Soares
Antonio, Selma Gutierrez [UNESP]
Guo, Yaofeng
Clarke, Amy J.
Kaufrnan, Michael J.
Oliveira, Marcelo Falcao de
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade de São Paulo (USP)
Colorado Sch Mines
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Campos Neto, Nelson Delfino de
Pereira, Flavio Soares
Antonio, Selma Gutierrez [UNESP]
Guo, Yaofeng
Clarke, Amy J.
Kaufrnan, Michael J.
Oliveira, Marcelo Falcao de
dc.subject.por.fl_str_mv Bulk metallic glass composites
Oxygen
Cooling rate
synchrotron XRD
Rietveld refinement
TEM
topic Bulk metallic glass composites
Oxygen
Cooling rate
synchrotron XRD
Rietveld refinement
TEM
description A design of experiments (DoE) approach was employed to systematically characterize the effects of both oxygen concentration and cooling rate on the amorphous and crystalline phase fractions in the Zr48Cu46.5Al4Nb1.5 bulk metallic glass composite (BMGC) alloy. Specifically, four distinct oxygen concentrations and five distinct cooling rates were used. Phase quantification was achieved using Rietveld refinement of synchrotron X-ray diffraction (XRD) data. Electron probe microanalysis (EPMA) using wavelength dispersive spectroscopy (WDS) revealed that the big-cube crystalline phase may scavenge oxygen from the amorphous matrix of a 2864 +/- 47 wppm oxygen sample. Transmission electron microscopy (TEM) of the alloy containing 340 +/- 25 wppm oxygen revealed the presence of an amorphous matrix with partially-transformed colonies of B2 (Pm-3m) where the transformation product was a B19' superstructure (Cm space group) instead of the more common B19' superstructure (P2(1)/m space group); this was in agreement with the Rietveld refinement results. An orientation relationship between the B2 and B19' phases was observed as expected. Finally, it was possible to produce thicker sections (5 mm vs. 3.5 mm) with the desired composite structure ( similar to 80% amorphous fraction with similar to 20% B2/ B19') compared with previous BMGC studies on similar compositions.
publishDate 2019
dc.date.none.fl_str_mv 2019-12-01
2020-12-10T17:03:15Z
2020-12-10T17:03:15Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.matchar.2019.109932
Materials Characterization. New York: Elsevier Science Inc, v. 158, 7 p., 2019.
1044-5803
http://hdl.handle.net/11449/195057
10.1016/j.matchar.2019.109932
WOS:000503314000048
url http://dx.doi.org/10.1016/j.matchar.2019.109932
http://hdl.handle.net/11449/195057
identifier_str_mv Materials Characterization. New York: Elsevier Science Inc, v. 158, 7 p., 2019.
1044-5803
10.1016/j.matchar.2019.109932
WOS:000503314000048
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Characterization
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 7
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1799965163428773888