Assessment of fracture toughness of cemented carbides by using a shallow notch produced by ultrashort pulsed laser ablation, and a comparative study with tests employing precracked specimens

The use of fracture mechanics for rationalizing the fracture behavior of cemented carbides is valid, as far as sharp cracks, free of residual stresses and subjected to a well-defined stress state are used for assessing fracture toughness. However, machining a very sharp notch on the surface of hardm...

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Autores: Ortiz Membrado, Laia|||0000-0001-9646-3226, Jiménez Piqué, Emilio|||0000-0002-6950-611X, Moreno Pedraz, Pablo, Llanes Pitarch, Luis Miguel|||0000-0003-1054-1073
Tipo de recurso: artículo
Fecha de publicación:2022
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:2117/379416
Acceso en línea:https://hdl.handle.net/2117/379416
https://dx.doi.org/10.1016/j.ijrmhm.2022.105949
Access Level:acceso abierto
Palabra clave:Fracture mechanics
Fracture toughness
Ultrashort pulsed laser ablation
Surface “through-thickness” micronotches
Cemented carbides
Mecànica de fractura
Àrees temàtiques de la UPC::Enginyeria dels materials
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spelling Assessment of fracture toughness of cemented carbides by using a shallow notch produced by ultrashort pulsed laser ablation, and a comparative study with tests employing precracked specimensOrtiz Membrado, Laia|||0000-0001-9646-3226Jiménez Piqué, Emilio|||0000-0002-6950-611XMoreno Pedraz, PabloLlanes Pitarch, Luis Miguel|||0000-0003-1054-1073Fracture mechanicsFracture toughnessUltrashort pulsed laser ablationSurface “through-thickness” micronotchesCemented carbidesMecànica de fracturaÀrees temàtiques de la UPC::Enginyeria dels materialsThe use of fracture mechanics for rationalizing the fracture behavior of cemented carbides is valid, as far as sharp cracks, free of residual stresses and subjected to a well-defined stress state are used for assessing fracture toughness. However, machining a very sharp notch on the surface of hardmetals for fracture toughness testing has been a critical issue during many years. Within this context, introduction of surface “through-thickness” micronotches (SEµVNB) by means of ultrashort pulsed laser ablation (UPLA) is here proposed, implemented and analyzed as an innovative precracking-like route within flexural testing procedures for appropiated evaluation of fracture toughness of cemented carbides. UPLA parameters used for introducing the micronotch are optimized in terms of induced damage ahead of the notch tip. For comparison purposes, fracture toughness is also determined by means of flexural testing of previously cracked single-edge notch beams (SENB-Cracked) as well as specimens with V-notch tips sharpened through diamond polishing using a razor blade, and Palmqvist indentation microfracture method. The satisfactory agreement found between values measured using UPLA-micronotched and SENB-Cracked (reference) specimens allows to conclude that flexural testing of SEµVNB samples is a valid methodology for reliable determination of fracture toughness of hardmetals. This is feasible because of the extremely short time of laser-matter interaction. It yields small and somehow controlled damage in front of the notch tip as a result of shock wave propagation during ablation, which translates into effective precracking of SEµVNB specimens. Previous article in issuePeer ReviewedElsevier20222022-11-0120222022-12-23journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/379416https://dx.doi.org/10.1016/j.ijrmhm.2022.105949reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3794162026-05-27T15:37:01Z
dc.title.none.fl_str_mv Assessment of fracture toughness of cemented carbides by using a shallow notch produced by ultrashort pulsed laser ablation, and a comparative study with tests employing precracked specimens
title Assessment of fracture toughness of cemented carbides by using a shallow notch produced by ultrashort pulsed laser ablation, and a comparative study with tests employing precracked specimens
spellingShingle Assessment of fracture toughness of cemented carbides by using a shallow notch produced by ultrashort pulsed laser ablation, and a comparative study with tests employing precracked specimens
Ortiz Membrado, Laia|||0000-0001-9646-3226
Fracture mechanics
Fracture toughness
Ultrashort pulsed laser ablation
Surface “through-thickness” micronotches
Cemented carbides
Mecànica de fractura
Àrees temàtiques de la UPC::Enginyeria dels materials
title_short Assessment of fracture toughness of cemented carbides by using a shallow notch produced by ultrashort pulsed laser ablation, and a comparative study with tests employing precracked specimens
title_full Assessment of fracture toughness of cemented carbides by using a shallow notch produced by ultrashort pulsed laser ablation, and a comparative study with tests employing precracked specimens
title_fullStr Assessment of fracture toughness of cemented carbides by using a shallow notch produced by ultrashort pulsed laser ablation, and a comparative study with tests employing precracked specimens
title_full_unstemmed Assessment of fracture toughness of cemented carbides by using a shallow notch produced by ultrashort pulsed laser ablation, and a comparative study with tests employing precracked specimens
title_sort Assessment of fracture toughness of cemented carbides by using a shallow notch produced by ultrashort pulsed laser ablation, and a comparative study with tests employing precracked specimens
dc.creator.none.fl_str_mv Ortiz Membrado, Laia|||0000-0001-9646-3226
Jiménez Piqué, Emilio|||0000-0002-6950-611X
Moreno Pedraz, Pablo
Llanes Pitarch, Luis Miguel|||0000-0003-1054-1073
author Ortiz Membrado, Laia|||0000-0001-9646-3226
author_facet Ortiz Membrado, Laia|||0000-0001-9646-3226
Jiménez Piqué, Emilio|||0000-0002-6950-611X
Moreno Pedraz, Pablo
Llanes Pitarch, Luis Miguel|||0000-0003-1054-1073
author_role author
author2 Jiménez Piqué, Emilio|||0000-0002-6950-611X
Moreno Pedraz, Pablo
Llanes Pitarch, Luis Miguel|||0000-0003-1054-1073
author2_role author
author
author
dc.subject.none.fl_str_mv Fracture mechanics
Fracture toughness
Ultrashort pulsed laser ablation
Surface “through-thickness” micronotches
Cemented carbides
Mecànica de fractura
Àrees temàtiques de la UPC::Enginyeria dels materials
topic Fracture mechanics
Fracture toughness
Ultrashort pulsed laser ablation
Surface “through-thickness” micronotches
Cemented carbides
Mecànica de fractura
Àrees temàtiques de la UPC::Enginyeria dels materials
description The use of fracture mechanics for rationalizing the fracture behavior of cemented carbides is valid, as far as sharp cracks, free of residual stresses and subjected to a well-defined stress state are used for assessing fracture toughness. However, machining a very sharp notch on the surface of hardmetals for fracture toughness testing has been a critical issue during many years. Within this context, introduction of surface “through-thickness” micronotches (SEµVNB) by means of ultrashort pulsed laser ablation (UPLA) is here proposed, implemented and analyzed as an innovative precracking-like route within flexural testing procedures for appropiated evaluation of fracture toughness of cemented carbides. UPLA parameters used for introducing the micronotch are optimized in terms of induced damage ahead of the notch tip. For comparison purposes, fracture toughness is also determined by means of flexural testing of previously cracked single-edge notch beams (SENB-Cracked) as well as specimens with V-notch tips sharpened through diamond polishing using a razor blade, and Palmqvist indentation microfracture method. The satisfactory agreement found between values measured using UPLA-micronotched and SENB-Cracked (reference) specimens allows to conclude that flexural testing of SEµVNB samples is a valid methodology for reliable determination of fracture toughness of hardmetals. This is feasible because of the extremely short time of laser-matter interaction. It yields small and somehow controlled damage in front of the notch tip as a result of shock wave propagation during ablation, which translates into effective precracking of SEµVNB specimens. Previous article in issue
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-11-01
2022
2022-12-23
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/2117/379416
https://dx.doi.org/10.1016/j.ijrmhm.2022.105949
url https://hdl.handle.net/2117/379416
https://dx.doi.org/10.1016/j.ijrmhm.2022.105949
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
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
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
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
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: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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