On Ti-18Si-6B and Ti-7.5Si-22.5B powder alloys prepared by high-energy ball milling and sintering
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1516-14392012005000130 http://hdl.handle.net/11449/30591 |
Resumo: | Recently, a new ternary phase was discovered in the Ti-Si-B system, located near the Ti6Si2B composition. The present study concerns the preparation of titanium alloys that contain such phase mixed with α-titanium and other intermetallic phases. High-purity powders were initially processed in a planetary ball-mill under argon atmosphere with Ti-18Si-6B and Ti-7.5Si-22.5B at. (%) initial compositions. Variation of parameters such as rotary speed, time, and ball diameters were adopted. The as-milled powders were pressureless sintered and hot pressed. Both the as-milled and sintered materials were characterized by X-ray diffraction, scanning electron microscopy and energy-dispersive spectrometry. Sintered samples have presented equilibrium structures formed mainly by the α-Ti+Ti6Si2B+Ti5Si3+TiB phases. Silicon and boron peaks disappear throughout the milling processes, as observed in the powder diffraction data. Furthermore, an iron contamination of up to 10 at. (%) is measured by X-ray spectroscopy analysis on some regions of the sintered samples. Density, hardness and tribological results for these two compositions are also presented here. |
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On Ti-18Si-6B and Ti-7.5Si-22.5B powder alloys prepared by high-energy ball milling and sinteringmultiphase intermetallicsphase identificationpowder metallurgyRecently, a new ternary phase was discovered in the Ti-Si-B system, located near the Ti6Si2B composition. The present study concerns the preparation of titanium alloys that contain such phase mixed with α-titanium and other intermetallic phases. High-purity powders were initially processed in a planetary ball-mill under argon atmosphere with Ti-18Si-6B and Ti-7.5Si-22.5B at. (%) initial compositions. Variation of parameters such as rotary speed, time, and ball diameters were adopted. The as-milled powders were pressureless sintered and hot pressed. Both the as-milled and sintered materials were characterized by X-ray diffraction, scanning electron microscopy and energy-dispersive spectrometry. Sintered samples have presented equilibrium structures formed mainly by the α-Ti+Ti6Si2B+Ti5Si3+TiB phases. Silicon and boron peaks disappear throughout the milling processes, as observed in the powder diffraction data. Furthermore, an iron contamination of up to 10 at. (%) is measured by X-ray spectroscopy analysis on some regions of the sintered samples. Density, hardness and tribological results for these two compositions are also presented here.Instituto Tecnologico de Aeronautica (ITA)Instituto Nacional de Pesquisas Espaciais (INPE)Universidade do Vale do Paraiba (UNIVAP)Instituto de Aeronautica e Espaco (IAE)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Instituto Tecnológico de AeronáuticaInstituto Nacional de Pesquisas EspaciaisUniversidade Estadual PaulistaUniversidade de São PauloUniversidade Estadual PaulistaABM, ABC, ABPolInstituto Tecnológico de AeronáuticaInstituto Nacional de Pesquisas Espaciais (INPE)Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Fernandes, Bruno BacciRamos, Alfeu Saraiva [UNESP]Moura Neto, Carlos deCoelho, Gilberto CarvalhoSuzuki, Paulo Atsushi2014-05-20T15:17:45Z2014-05-20T15:17:45Z2012-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article954-963application/pdfhttp://dx.doi.org/10.1590/S1516-14392012005000130Materials Research. ABM, ABC, ABPol, v. 15, n. 6, p. 954-963, 2012.1516-1439http://hdl.handle.net/11449/3059110.1590/S1516-14392012005000130S1516-14392012000600018WOS:000311554400018S1516-14392012000600018.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Research1.1030,398info:eu-repo/semantics/openAccess2023-11-10T06:10:54Zoai:repositorio.unesp.br:11449/30591Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:18:02.414782Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
On Ti-18Si-6B and Ti-7.5Si-22.5B powder alloys prepared by high-energy ball milling and sintering |
title |
On Ti-18Si-6B and Ti-7.5Si-22.5B powder alloys prepared by high-energy ball milling and sintering |
spellingShingle |
On Ti-18Si-6B and Ti-7.5Si-22.5B powder alloys prepared by high-energy ball milling and sintering Fernandes, Bruno Bacci multiphase intermetallics phase identification powder metallurgy |
title_short |
On Ti-18Si-6B and Ti-7.5Si-22.5B powder alloys prepared by high-energy ball milling and sintering |
title_full |
On Ti-18Si-6B and Ti-7.5Si-22.5B powder alloys prepared by high-energy ball milling and sintering |
title_fullStr |
On Ti-18Si-6B and Ti-7.5Si-22.5B powder alloys prepared by high-energy ball milling and sintering |
title_full_unstemmed |
On Ti-18Si-6B and Ti-7.5Si-22.5B powder alloys prepared by high-energy ball milling and sintering |
title_sort |
On Ti-18Si-6B and Ti-7.5Si-22.5B powder alloys prepared by high-energy ball milling and sintering |
author |
Fernandes, Bruno Bacci |
author_facet |
Fernandes, Bruno Bacci Ramos, Alfeu Saraiva [UNESP] Moura Neto, Carlos de Coelho, Gilberto Carvalho Suzuki, Paulo Atsushi |
author_role |
author |
author2 |
Ramos, Alfeu Saraiva [UNESP] Moura Neto, Carlos de Coelho, Gilberto Carvalho Suzuki, Paulo Atsushi |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Instituto Tecnológico de Aeronáutica Instituto Nacional de Pesquisas Espaciais (INPE) Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Fernandes, Bruno Bacci Ramos, Alfeu Saraiva [UNESP] Moura Neto, Carlos de Coelho, Gilberto Carvalho Suzuki, Paulo Atsushi |
dc.subject.por.fl_str_mv |
multiphase intermetallics phase identification powder metallurgy |
topic |
multiphase intermetallics phase identification powder metallurgy |
description |
Recently, a new ternary phase was discovered in the Ti-Si-B system, located near the Ti6Si2B composition. The present study concerns the preparation of titanium alloys that contain such phase mixed with α-titanium and other intermetallic phases. High-purity powders were initially processed in a planetary ball-mill under argon atmosphere with Ti-18Si-6B and Ti-7.5Si-22.5B at. (%) initial compositions. Variation of parameters such as rotary speed, time, and ball diameters were adopted. The as-milled powders were pressureless sintered and hot pressed. Both the as-milled and sintered materials were characterized by X-ray diffraction, scanning electron microscopy and energy-dispersive spectrometry. Sintered samples have presented equilibrium structures formed mainly by the α-Ti+Ti6Si2B+Ti5Si3+TiB phases. Silicon and boron peaks disappear throughout the milling processes, as observed in the powder diffraction data. Furthermore, an iron contamination of up to 10 at. (%) is measured by X-ray spectroscopy analysis on some regions of the sintered samples. Density, hardness and tribological results for these two compositions are also presented here. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-12-01 2014-05-20T15:17:45Z 2014-05-20T15:17:45Z |
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/10.1590/S1516-14392012005000130 Materials Research. ABM, ABC, ABPol, v. 15, n. 6, p. 954-963, 2012. 1516-1439 http://hdl.handle.net/11449/30591 10.1590/S1516-14392012005000130 S1516-14392012000600018 WOS:000311554400018 S1516-14392012000600018.pdf |
url |
http://dx.doi.org/10.1590/S1516-14392012005000130 http://hdl.handle.net/11449/30591 |
identifier_str_mv |
Materials Research. ABM, ABC, ABPol, v. 15, n. 6, p. 954-963, 2012. 1516-1439 10.1590/S1516-14392012005000130 S1516-14392012000600018 WOS:000311554400018 S1516-14392012000600018.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Research 1.103 0,398 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
954-963 application/pdf |
dc.publisher.none.fl_str_mv |
ABM, ABC, ABPol |
publisher.none.fl_str_mv |
ABM, ABC, ABPol |
dc.source.none.fl_str_mv |
SciELO 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_ |
1808128788231356416 |