Phase formation maps in Zr48Cu46.5Al4Nb1.5 bulk metallic glass composites as a function of cooling rate and oxygen concentration
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Outros Autores: | , , , , , |
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:29462024-08-05T19:26:05.618440Repositório 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_ |
1808129068558712832 |