Crack closure and fatigue crack growth near threshold of a metastable austenitic stainless steel

In this paper R-ratio effects on fatigue crack growth near threshold region of a metastable austenitic stainless steel (MASS) in two different conditions, i.e. annealed and cold rolled, is investigated. The authors present two approaches to correlate FCGR data for R = 0.1, 0.3, 0.5, 0.7 and K-max =...

Descripción completa

Detalles Bibliográficos
Autores: Martelo, D.F., Mateo García, Antonio Manuel|||0000-0001-8336-6128, Chapetti, M.D.
Tipo de recurso: artículo
Fecha de publicación:2015
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:2117/76984
Acceso en línea:https://hdl.handle.net/2117/76984
https://dx.doi.org/10.1016/j.ijfatigue.2015.02.016
Access Level:acceso abierto
Palabra clave:Stainless steel
Fracture mechanics
Fatigue crack propagation
Metastable austenitic stainless steel
Crack closure
Delta K and K-max
Martensitic transformation
induced martensitic transformations
load ratio
trip steel
propagation
deformation
model
Acer inoxidable
Mecànica de fractura
Àrees temàtiques de la UPC::Enginyeria dels materials
id ES_c9a25f00a84346b866a46ebe7b97c7a4
oai_identifier_str oai:upcommons.upc.edu:2117/76984
network_acronym_str ES
network_name_str España
repository_id_str
spelling Crack closure and fatigue crack growth near threshold of a metastable austenitic stainless steelMartelo, D.F.Mateo García, Antonio Manuel|||0000-0001-8336-6128Chapetti, M.D.Stainless steelFracture mechanicsFatigue crack propagationMetastable austenitic stainless steelCrack closureDelta K and K-maxMartensitic transformationinduced martensitic transformationsload ratiotrip steelpropagationdeformationmodelAcer inoxidableMecànica de fracturaÀrees temàtiques de la UPC::Enginyeria dels materialsIn this paper R-ratio effects on fatigue crack growth near threshold region of a metastable austenitic stainless steel (MASS) in two different conditions, i.e. annealed and cold rolled, is investigated. The authors present two approaches to correlate FCGR data for R = 0.1, 0.3, 0.5, 0.7 and K-max = 23 MPa root m using a two-parameters approach (Delta K, K-max and alpha in Kujawski's model) and crack closure model (using Elber's K-op, and in Donald's ACRn2 approaches). The K-op and ACRn2 were experimentally measured on a single edge tension specimens. The K-op measurements were performed using a modified method and based on ASTM standards. While the two driving force approaches correlate data well in the Paris region, they fail to correlate them in the threshold region. However, this correlation can be improved in the threshold region when a different alpha value from the Paris region is used. The authors indicated that two different mechanisms operate; one in the Paris region and another in the near threshold. Hence, they proposed to combine the two-parameter and crack closure approaches where Delta K is replaced by Delta K-eff (estimated by a new method proposed in this paper), which is shown to correlate the FCGR data for different stress ratios for annealed steel. The correlation for cold rolled condition shows improvement with the new approach but is not as good as for the annealed one. The author further suggests to modify K-max in the two-parameter approach. (C) 2015 Elsevier Ltd. All rights reserved.Peer Reviewed20152015-08-0120152015-09-21journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/76984https://dx.doi.org/10.1016/j.ijfatigue.2015.02.016reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2http://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/769842026-05-27T15:37:01Z
dc.title.none.fl_str_mv Crack closure and fatigue crack growth near threshold of a metastable austenitic stainless steel
title Crack closure and fatigue crack growth near threshold of a metastable austenitic stainless steel
spellingShingle Crack closure and fatigue crack growth near threshold of a metastable austenitic stainless steel
Martelo, D.F.
Stainless steel
Fracture mechanics
Fatigue crack propagation
Metastable austenitic stainless steel
Crack closure
Delta K and K-max
Martensitic transformation
induced martensitic transformations
load ratio
trip steel
propagation
deformation
model
Acer inoxidable
Mecànica de fractura
Àrees temàtiques de la UPC::Enginyeria dels materials
title_short Crack closure and fatigue crack growth near threshold of a metastable austenitic stainless steel
title_full Crack closure and fatigue crack growth near threshold of a metastable austenitic stainless steel
title_fullStr Crack closure and fatigue crack growth near threshold of a metastable austenitic stainless steel
title_full_unstemmed Crack closure and fatigue crack growth near threshold of a metastable austenitic stainless steel
title_sort Crack closure and fatigue crack growth near threshold of a metastable austenitic stainless steel
dc.creator.none.fl_str_mv Martelo, D.F.
Mateo García, Antonio Manuel|||0000-0001-8336-6128
Chapetti, M.D.
author Martelo, D.F.
author_facet Martelo, D.F.
Mateo García, Antonio Manuel|||0000-0001-8336-6128
Chapetti, M.D.
author_role author
author2 Mateo García, Antonio Manuel|||0000-0001-8336-6128
Chapetti, M.D.
author2_role author
author
dc.subject.none.fl_str_mv Stainless steel
Fracture mechanics
Fatigue crack propagation
Metastable austenitic stainless steel
Crack closure
Delta K and K-max
Martensitic transformation
induced martensitic transformations
load ratio
trip steel
propagation
deformation
model
Acer inoxidable
Mecànica de fractura
Àrees temàtiques de la UPC::Enginyeria dels materials
topic Stainless steel
Fracture mechanics
Fatigue crack propagation
Metastable austenitic stainless steel
Crack closure
Delta K and K-max
Martensitic transformation
induced martensitic transformations
load ratio
trip steel
propagation
deformation
model
Acer inoxidable
Mecànica de fractura
Àrees temàtiques de la UPC::Enginyeria dels materials
description In this paper R-ratio effects on fatigue crack growth near threshold region of a metastable austenitic stainless steel (MASS) in two different conditions, i.e. annealed and cold rolled, is investigated. The authors present two approaches to correlate FCGR data for R = 0.1, 0.3, 0.5, 0.7 and K-max = 23 MPa root m using a two-parameters approach (Delta K, K-max and alpha in Kujawski's model) and crack closure model (using Elber's K-op, and in Donald's ACRn2 approaches). The K-op and ACRn2 were experimentally measured on a single edge tension specimens. The K-op measurements were performed using a modified method and based on ASTM standards. While the two driving force approaches correlate data well in the Paris region, they fail to correlate them in the threshold region. However, this correlation can be improved in the threshold region when a different alpha value from the Paris region is used. The authors indicated that two different mechanisms operate; one in the Paris region and another in the near threshold. Hence, they proposed to combine the two-parameter and crack closure approaches where Delta K is replaced by Delta K-eff (estimated by a new method proposed in this paper), which is shown to correlate the FCGR data for different stress ratios for annealed steel. The correlation for cold rolled condition shows improvement with the new approach but is not as good as for the annealed one. The author further suggests to modify K-max in the two-parameter approach. (C) 2015 Elsevier Ltd. All rights reserved.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-08-01
2015
2015-09-21
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/2117/76984
https://dx.doi.org/10.1016/j.ijfatigue.2015.02.016
url https://hdl.handle.net/2117/76984
https://dx.doi.org/10.1016/j.ijfatigue.2015.02.016
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

http://creativecommons.org/licenses/by-nc-nd/3.0/es/
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

http://creativecommons.org/licenses/by-nc-nd/3.0/es/
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
_version_ 1869419387953348608
score 15,300724

Similares en LA Referencia