WC – (Cu: AISI304) composites processed from high energy ball milled powders
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/37618 |
Resumo: | Alternative binders to cobalt, based on stainless steel (SS, AISI304) and copper were investigated for tungsten carbide (WC) based cemented carbides. The binder content was fixed at 12 wt%, and the Cu:SS ratio varied in proportions of 0:1, 1:5, 1:2, 1:1, 1:0. High energy ball milling was applied to ensure high homogenization, nanometric particle size and mechanical alloying of binder elements in the powders' mixtures. To assess an adequate sintering route, wettability testing and constant heating rate dilatometry in vacuum were performed. The composites were analyzed in terms of their structural, microstructural and mechanical characteristics. The poor wettability of melted Cu on WC surfaces was increased by alloying it with SS and highly dense compacts could be successfully attained at reduced vacuum sintering temperatures with binders having a Cu:SS ratio equal to or lower than 1:2. The microstructures show secondary phases and significant grain coarsening during sintering, whereas the average grain size was kept in the nanometric range. The composites that attained almost full densification present high hardness, comparable to that of nanometric WC-12Co cemented carbides processed by similar routes, but lower toughness values. |
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WC – (Cu: AISI304) composites processed from high energy ball milled powdersNanopowdersNanocompositesCemented carbidesCopperStainless steel alloysMicrostructureMechanical propertiesAlternative binders to cobalt, based on stainless steel (SS, AISI304) and copper were investigated for tungsten carbide (WC) based cemented carbides. The binder content was fixed at 12 wt%, and the Cu:SS ratio varied in proportions of 0:1, 1:5, 1:2, 1:1, 1:0. High energy ball milling was applied to ensure high homogenization, nanometric particle size and mechanical alloying of binder elements in the powders' mixtures. To assess an adequate sintering route, wettability testing and constant heating rate dilatometry in vacuum were performed. The composites were analyzed in terms of their structural, microstructural and mechanical characteristics. The poor wettability of melted Cu on WC surfaces was increased by alloying it with SS and highly dense compacts could be successfully attained at reduced vacuum sintering temperatures with binders having a Cu:SS ratio equal to or lower than 1:2. The microstructures show secondary phases and significant grain coarsening during sintering, whereas the average grain size was kept in the nanometric range. The composites that attained almost full densification present high hardness, comparable to that of nanometric WC-12Co cemented carbides processed by similar routes, but lower toughness values.Elsevier2023-05-09T15:36:21Z2019-11-01T00:00:00Z2019-11info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/37618eng0263-436810.1016/j.ijrmhm.2019.104990Cardoso, J.P.Puga, J.Rocha, A.M. FerroFernandes, C.M.Senos, A.M.R.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:12:48Zoai:ria.ua.pt:10773/37618Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:08:13.884620Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
WC – (Cu: AISI304) composites processed from high energy ball milled powders |
title |
WC – (Cu: AISI304) composites processed from high energy ball milled powders |
spellingShingle |
WC – (Cu: AISI304) composites processed from high energy ball milled powders Cardoso, J.P. Nanopowders Nanocomposites Cemented carbides Copper Stainless steel alloys Microstructure Mechanical properties |
title_short |
WC – (Cu: AISI304) composites processed from high energy ball milled powders |
title_full |
WC – (Cu: AISI304) composites processed from high energy ball milled powders |
title_fullStr |
WC – (Cu: AISI304) composites processed from high energy ball milled powders |
title_full_unstemmed |
WC – (Cu: AISI304) composites processed from high energy ball milled powders |
title_sort |
WC – (Cu: AISI304) composites processed from high energy ball milled powders |
author |
Cardoso, J.P. |
author_facet |
Cardoso, J.P. Puga, J. Rocha, A.M. Ferro Fernandes, C.M. Senos, A.M.R. |
author_role |
author |
author2 |
Puga, J. Rocha, A.M. Ferro Fernandes, C.M. Senos, A.M.R. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Cardoso, J.P. Puga, J. Rocha, A.M. Ferro Fernandes, C.M. Senos, A.M.R. |
dc.subject.por.fl_str_mv |
Nanopowders Nanocomposites Cemented carbides Copper Stainless steel alloys Microstructure Mechanical properties |
topic |
Nanopowders Nanocomposites Cemented carbides Copper Stainless steel alloys Microstructure Mechanical properties |
description |
Alternative binders to cobalt, based on stainless steel (SS, AISI304) and copper were investigated for tungsten carbide (WC) based cemented carbides. The binder content was fixed at 12 wt%, and the Cu:SS ratio varied in proportions of 0:1, 1:5, 1:2, 1:1, 1:0. High energy ball milling was applied to ensure high homogenization, nanometric particle size and mechanical alloying of binder elements in the powders' mixtures. To assess an adequate sintering route, wettability testing and constant heating rate dilatometry in vacuum were performed. The composites were analyzed in terms of their structural, microstructural and mechanical characteristics. The poor wettability of melted Cu on WC surfaces was increased by alloying it with SS and highly dense compacts could be successfully attained at reduced vacuum sintering temperatures with binders having a Cu:SS ratio equal to or lower than 1:2. The microstructures show secondary phases and significant grain coarsening during sintering, whereas the average grain size was kept in the nanometric range. The composites that attained almost full densification present high hardness, comparable to that of nanometric WC-12Co cemented carbides processed by similar routes, but lower toughness values. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-11-01T00:00:00Z 2019-11 2023-05-09T15:36:21Z |
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://hdl.handle.net/10773/37618 |
url |
http://hdl.handle.net/10773/37618 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0263-4368 10.1016/j.ijrmhm.2019.104990 |
dc.rights.driver.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:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799137735676526592 |