Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography

Strength and reliability of WC-Co cemented carbides (hardmetals) are dependent on effective fracture toughness as well as on nature, size and distribution of processing flaws. Regarding toughness, they exhibit a crack growth resistance (R-curve) behavior, derived from the development of a multiligam...

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Autores: Tarragó Cifre, Jose María, Coureaux Mustelier, David, Torres Hernández, Yadir, Jiménez Piqué, Emilio|||0000-0002-6950-611X, Schneider, Ludwig, Fair, Jonathan, Llanes Pitarch, Luis Miguel|||0000-0003-1054-1073
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/112707
Acceso en línea:https://hdl.handle.net/2117/112707
https://dx.doi.org/10.1016/j.ijrmhm.2017.11.031
Access Level:acceso abierto
Palabra clave:Reliability
Fractography
Carbides
R-curve behavior
Strength
WC-Co cemented carbides
Carburs
Fractografia
Àrees temàtiques de la UPC::Enginyeria química
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spelling Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractographyTarragó Cifre, Jose MaríaCoureaux Mustelier, DavidTorres Hernández, YadirJiménez Piqué, Emilio|||0000-0002-6950-611XSchneider, LudwigFair, JonathanLlanes Pitarch, Luis Miguel|||0000-0003-1054-1073ReliabilityFractographyCarbidesFractographyR-curve behaviorReliabilityStrengthWC-Co cemented carbidesCarbursFractografiaÀrees temàtiques de la UPC::Enginyeria químicaStrength and reliability of WC-Co cemented carbides (hardmetals) are dependent on effective fracture toughness as well as on nature, size and distribution of processing flaws. Regarding toughness, they exhibit a crack growth resistance (R-curve) behavior, derived from the development of a multiligament bridging zone at the crack wake. Accordingly, successful implementation of fracture mechanics requires consideration of tangency criterion, between applied stress intensity factor and R-curve, in addition to fractographic inspection. It is the aim of this study to evaluate the strength behavior of a series of experimental WC-Co grades on the basis of R-curve failure criteria. Results indicate that microstructural effects on the strength of hardmetals may be satisfactorily rationalized following the referred criterion. The analysis includes consideration of nature and distribution of fracture origins, found to be more diverse and wider, respectively, for the harder fine-grained grades. This experimental evidence, together with the fact that these hardmetals exhibit steeper rising R-curves than tougher coarse-grained ones, leads to lower reliability for the former. This investigation documents and validates the great relevance of R-curve behavior for optimizing the mechanical performance of WC-Co cemented carbides on the basis of microstructural design.Peer Reviewed20182018-02-0120182018-01-12journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/112707https://dx.doi.org/10.1016/j.ijrmhm.2017.11.031reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1127072026-05-27T15:37:01Z
dc.title.none.fl_str_mv Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography
title Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography
spellingShingle Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography
Tarragó Cifre, Jose María
Reliability
Fractography
Carbides
Fractography
R-curve behavior
Reliability
Strength
WC-Co cemented carbides
Carburs
Fractografia
Àrees temàtiques de la UPC::Enginyeria química
title_short Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography
title_full Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography
title_fullStr Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography
title_full_unstemmed Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography
title_sort Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography
dc.creator.none.fl_str_mv Tarragó Cifre, Jose María
Coureaux Mustelier, David
Torres Hernández, Yadir
Jiménez Piqué, Emilio|||0000-0002-6950-611X
Schneider, Ludwig
Fair, Jonathan
Llanes Pitarch, Luis Miguel|||0000-0003-1054-1073
author Tarragó Cifre, Jose María
author_facet Tarragó Cifre, Jose María
Coureaux Mustelier, David
Torres Hernández, Yadir
Jiménez Piqué, Emilio|||0000-0002-6950-611X
Schneider, Ludwig
Fair, Jonathan
Llanes Pitarch, Luis Miguel|||0000-0003-1054-1073
author_role author
author2 Coureaux Mustelier, David
Torres Hernández, Yadir
Jiménez Piqué, Emilio|||0000-0002-6950-611X
Schneider, Ludwig
Fair, Jonathan
Llanes Pitarch, Luis Miguel|||0000-0003-1054-1073
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Reliability
Fractography
Carbides
Fractography
R-curve behavior
Reliability
Strength
WC-Co cemented carbides
Carburs
Fractografia
Àrees temàtiques de la UPC::Enginyeria química
topic Reliability
Fractography
Carbides
Fractography
R-curve behavior
Reliability
Strength
WC-Co cemented carbides
Carburs
Fractografia
Àrees temàtiques de la UPC::Enginyeria química
description Strength and reliability of WC-Co cemented carbides (hardmetals) are dependent on effective fracture toughness as well as on nature, size and distribution of processing flaws. Regarding toughness, they exhibit a crack growth resistance (R-curve) behavior, derived from the development of a multiligament bridging zone at the crack wake. Accordingly, successful implementation of fracture mechanics requires consideration of tangency criterion, between applied stress intensity factor and R-curve, in addition to fractographic inspection. It is the aim of this study to evaluate the strength behavior of a series of experimental WC-Co grades on the basis of R-curve failure criteria. Results indicate that microstructural effects on the strength of hardmetals may be satisfactorily rationalized following the referred criterion. The analysis includes consideration of nature and distribution of fracture origins, found to be more diverse and wider, respectively, for the harder fine-grained grades. This experimental evidence, together with the fact that these hardmetals exhibit steeper rising R-curves than tougher coarse-grained ones, leads to lower reliability for the former. This investigation documents and validates the great relevance of R-curve behavior for optimizing the mechanical performance of WC-Co cemented carbides on the basis of microstructural design.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018-02-01
2018
2018-01-12
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/112707
https://dx.doi.org/10.1016/j.ijrmhm.2017.11.031
url https://hdl.handle.net/2117/112707
https://dx.doi.org/10.1016/j.ijrmhm.2017.11.031
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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