Softening-precipitation interaction in a Nb-and N-bearing austenitic stainless steel under stress relaxation

In this work, stress relaxation technique was employed to analyze the softening-precipitation interaction in an ASTM F-1586 austenitic stainless steel, an alloy used in orthopedic implants. Hot compression tests were performed at temperature range of 800–1100¿°C. Pre-strain of 5.0%, strain rate of 0...

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Autor: Cabrera Marrero, José M.|||0000-0001-8417-1736
Tipo de recurso: artículo
Fecha de publicación:2020
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:2117/331042
Acceso en línea:https://hdl.handle.net/2117/331042
https://dx.doi.org/10.1016/j.jmrt.2020.05.066
Access Level:acceso abierto
Palabra clave:Austenitic stainless steel
Stress relaxation
Softening mechanism
Precipitation
Z-Phase
Acer inoxidable austenític
Àrees temàtiques de la UPC::Enginyeria dels materials
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spelling Softening-precipitation interaction in a Nb-and N-bearing austenitic stainless steel under stress relaxationCabrera Marrero, José M.|||0000-0001-8417-1736Austenitic stainless steelStress relaxationSoftening mechanismPrecipitationZ-PhaseAustenitic stainless steelAcer inoxidable austeníticÀrees temàtiques de la UPC::Enginyeria dels materialsIn this work, stress relaxation technique was employed to analyze the softening-precipitation interaction in an ASTM F-1586 austenitic stainless steel, an alloy used in orthopedic implants. Hot compression tests were performed at temperature range of 800–1100¿°C. Pre-strain of 5.0%, strain rate of 0.1 s-1, and loading time exposure of 40¿min were employed. The experiments were carried out in a dilatometer equipment. The stress- time (s vs. log (t)) curves were plotted, and the microstructure of the specimens was characterized. The acquired results permitted to estimate the start (ts) and the finish (tf) times of the effective interaction between recovery and precipitation. The data revealed three distinct stages in the stress versus log time curves: (i) reduction in the stress levels due to static recovery; (ii) delay in the stress relaxation rate leading to a stress plateau, and (iii) sharp decrease of the stress levels associated with the finish of the precipitation. These results enabled the creation of Precipitation-Temperature-Time (PTT) curves for the present material. It was found that the onset time for the strain-induced Z-phase (CrNbN) is around 120¿s and the precipitates delay the kinetics of the softening.Peer ReviewedElsevier20202020-07-0120202020-10-30journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/331042https://dx.doi.org/10.1016/j.jmrt.2020.05.066reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3310422026-05-27T15:37:01Z
dc.title.none.fl_str_mv Softening-precipitation interaction in a Nb-and N-bearing austenitic stainless steel under stress relaxation
title Softening-precipitation interaction in a Nb-and N-bearing austenitic stainless steel under stress relaxation
spellingShingle Softening-precipitation interaction in a Nb-and N-bearing austenitic stainless steel under stress relaxation
Cabrera Marrero, José M.|||0000-0001-8417-1736
Austenitic stainless steel
Stress relaxation
Softening mechanism
Precipitation
Z-Phase
Austenitic stainless steel
Acer inoxidable austenític
Àrees temàtiques de la UPC::Enginyeria dels materials
title_short Softening-precipitation interaction in a Nb-and N-bearing austenitic stainless steel under stress relaxation
title_full Softening-precipitation interaction in a Nb-and N-bearing austenitic stainless steel under stress relaxation
title_fullStr Softening-precipitation interaction in a Nb-and N-bearing austenitic stainless steel under stress relaxation
title_full_unstemmed Softening-precipitation interaction in a Nb-and N-bearing austenitic stainless steel under stress relaxation
title_sort Softening-precipitation interaction in a Nb-and N-bearing austenitic stainless steel under stress relaxation
dc.creator.none.fl_str_mv Cabrera Marrero, José M.|||0000-0001-8417-1736
author Cabrera Marrero, José M.|||0000-0001-8417-1736
author_facet Cabrera Marrero, José M.|||0000-0001-8417-1736
author_role author
dc.subject.none.fl_str_mv Austenitic stainless steel
Stress relaxation
Softening mechanism
Precipitation
Z-Phase
Austenitic stainless steel
Acer inoxidable austenític
Àrees temàtiques de la UPC::Enginyeria dels materials
topic Austenitic stainless steel
Stress relaxation
Softening mechanism
Precipitation
Z-Phase
Austenitic stainless steel
Acer inoxidable austenític
Àrees temàtiques de la UPC::Enginyeria dels materials
description In this work, stress relaxation technique was employed to analyze the softening-precipitation interaction in an ASTM F-1586 austenitic stainless steel, an alloy used in orthopedic implants. Hot compression tests were performed at temperature range of 800–1100¿°C. Pre-strain of 5.0%, strain rate of 0.1 s-1, and loading time exposure of 40¿min were employed. The experiments were carried out in a dilatometer equipment. The stress- time (s vs. log (t)) curves were plotted, and the microstructure of the specimens was characterized. The acquired results permitted to estimate the start (ts) and the finish (tf) times of the effective interaction between recovery and precipitation. The data revealed three distinct stages in the stress versus log time curves: (i) reduction in the stress levels due to static recovery; (ii) delay in the stress relaxation rate leading to a stress plateau, and (iii) sharp decrease of the stress levels associated with the finish of the precipitation. These results enabled the creation of Precipitation-Temperature-Time (PTT) curves for the present material. It was found that the onset time for the strain-induced Z-phase (CrNbN) is around 120¿s and the precipitates delay the kinetics of the softening.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-07-01
2020
2020-10-30
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/2117/331042
https://dx.doi.org/10.1016/j.jmrt.2020.05.066
url https://hdl.handle.net/2117/331042
https://dx.doi.org/10.1016/j.jmrt.2020.05.066
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-NoDerivs 3.0 Spain
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
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
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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score 15.300724

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