Effects of Cu-alloying in minute quantities on the corrosion-induced mechanical degradation behaviors of medium C-based ultrahigh-strength steel in aqueous environments

This study examined the applicability of Cu-alloying in minute quantities to medium C-based ultrahigh-strength automotive steel with a tensile strength of more than 2000 MPa to improve the resistance to mechanical degradation caused by aqueous corrosion. Cu-alloying of this steel favored the precipi...

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Autores principales:	Sung Jin Kim, Jin Sung Park, Hwan Goo Seong
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Ultrahigh-strength steel Copper Hydrogen embrittlement Corrosion Slow strain rate test Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/ad94f9b942ef484283f4f3677ab3b7e0
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spelling	oai:doaj.org-article:ad94f9b942ef484283f4f3677ab3b7e02021-11-24T04:31:24ZEffects of Cu-alloying in minute quantities on the corrosion-induced mechanical degradation behaviors of medium C-based ultrahigh-strength steel in aqueous environments2238-785410.1016/j.jmrt.2021.11.029https://doaj.org/article/ad94f9b942ef484283f4f3677ab3b7e02021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2238785421013089https://doaj.org/toc/2238-7854This study examined the applicability of Cu-alloying in minute quantities to medium C-based ultrahigh-strength automotive steel with a tensile strength of more than 2000 MPa to improve the resistance to mechanical degradation caused by aqueous corrosion. Cu-alloying of this steel favored the precipitation of fine-(Ti,Mo)C particles, leading to a smaller prior-γ grain size (PAGS) and inter-lath size, resulting in higher tensile strain. In addition, Cu-alloyed steel showed the surface inhibiting characteristics in a neutral aqueous condition based on higher corrosion resistance (i.e., larger polarization resistance and less weight loss). The smaller particle size of corrosion scale (CuxFe3-xO4), more uniform surface roughness, and smaller PAGS can be the major mechanistic reasons for suppressing the reduction in the mechanical properties of Cu-alloyed ultrahigh-strength steel in the corrosive environment.Sung Jin KimJin Sung ParkHwan Goo SeongElsevierarticleUltrahigh-strength steelCopperHydrogen embrittlementCorrosionSlow strain rate testMining engineering. MetallurgyTN1-997ENJournal of Materials Research and Technology, Vol 15, Iss , Pp 5682-5693 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ultrahigh-strength steel Copper Hydrogen embrittlement Corrosion Slow strain rate test Mining engineering. Metallurgy TN1-997
spellingShingle	Ultrahigh-strength steel Copper Hydrogen embrittlement Corrosion Slow strain rate test Mining engineering. Metallurgy TN1-997 Sung Jin Kim Jin Sung Park Hwan Goo Seong Effects of Cu-alloying in minute quantities on the corrosion-induced mechanical degradation behaviors of medium C-based ultrahigh-strength steel in aqueous environments
description	This study examined the applicability of Cu-alloying in minute quantities to medium C-based ultrahigh-strength automotive steel with a tensile strength of more than 2000 MPa to improve the resistance to mechanical degradation caused by aqueous corrosion. Cu-alloying of this steel favored the precipitation of fine-(Ti,Mo)C particles, leading to a smaller prior-γ grain size (PAGS) and inter-lath size, resulting in higher tensile strain. In addition, Cu-alloyed steel showed the surface inhibiting characteristics in a neutral aqueous condition based on higher corrosion resistance (i.e., larger polarization resistance and less weight loss). The smaller particle size of corrosion scale (CuxFe3-xO4), more uniform surface roughness, and smaller PAGS can be the major mechanistic reasons for suppressing the reduction in the mechanical properties of Cu-alloyed ultrahigh-strength steel in the corrosive environment.
format	article
author	Sung Jin Kim Jin Sung Park Hwan Goo Seong
author_facet	Sung Jin Kim Jin Sung Park Hwan Goo Seong
author_sort	Sung Jin Kim
title	Effects of Cu-alloying in minute quantities on the corrosion-induced mechanical degradation behaviors of medium C-based ultrahigh-strength steel in aqueous environments
title_short	Effects of Cu-alloying in minute quantities on the corrosion-induced mechanical degradation behaviors of medium C-based ultrahigh-strength steel in aqueous environments
title_full	Effects of Cu-alloying in minute quantities on the corrosion-induced mechanical degradation behaviors of medium C-based ultrahigh-strength steel in aqueous environments
title_fullStr	Effects of Cu-alloying in minute quantities on the corrosion-induced mechanical degradation behaviors of medium C-based ultrahigh-strength steel in aqueous environments
title_full_unstemmed	Effects of Cu-alloying in minute quantities on the corrosion-induced mechanical degradation behaviors of medium C-based ultrahigh-strength steel in aqueous environments
title_sort	effects of cu-alloying in minute quantities on the corrosion-induced mechanical degradation behaviors of medium c-based ultrahigh-strength steel in aqueous environments
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ad94f9b942ef484283f4f3677ab3b7e0
work_keys_str_mv	AT sungjinkim effectsofcualloyinginminutequantitiesonthecorrosioninducedmechanicaldegradationbehaviorsofmediumcbasedultrahighstrengthsteelinaqueousenvironments AT jinsungpark effectsofcualloyinginminutequantitiesonthecorrosioninducedmechanicaldegradationbehaviorsofmediumcbasedultrahighstrengthsteelinaqueousenvironments AT hwangooseong effectsofcualloyinginminutequantitiesonthecorrosioninducedmechanicaldegradationbehaviorsofmediumcbasedultrahighstrengthsteelinaqueousenvironments
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Effects of Cu-alloying in minute quantities on the corrosion-induced mechanical degradation behaviors of medium C-based ultrahigh-strength steel in aqueous environments

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