Design for Fe-high Mn alloy with an improved combination of strength and ductility

Abstract Recently, Fe-Mn twinning-induced plasticity steels with an austenite phase have been the course of great interest due to their excellent combination of tensile strength and ductility, which carbon steels have never been able to attain. Nevertheless, twinning-induced plasticity steels also e...

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Autores principales:	Seung-Joon Lee, Jeongho Han, Sukjin Lee, Seok-Hyeon Kang, Sang-Min Lee, Young-Kook Lee
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7eddf60c539541b8bd189fce8b8ed1b1
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spelling	oai:doaj.org-article:7eddf60c539541b8bd189fce8b8ed1b12021-12-02T11:40:43ZDesign for Fe-high Mn alloy with an improved combination of strength and ductility10.1038/s41598-017-03862-y2045-2322https://doaj.org/article/7eddf60c539541b8bd189fce8b8ed1b12017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03862-yhttps://doaj.org/toc/2045-2322Abstract Recently, Fe-Mn twinning-induced plasticity steels with an austenite phase have been the course of great interest due to their excellent combination of tensile strength and ductility, which carbon steels have never been able to attain. Nevertheless, twinning-induced plasticity steels also exhibit a trade-off between strength and ductility, a longstanding dilemma for physical metallurgists, when fabricated based on the two alloy design parameters of stacking fault energy and grain size. Therefore, we investigated the tensile properties of three Fe-Mn austenitic steels with similar stacking fault energy and grain size, but different carbon concentrations. Surprisingly, when carbon concentration increased, both strength and ductility significantly improved. This indicates that the addition of carbon resulted in a proportionality between strength and ductility, instead of a trade-off between those characteristics. This new design parameter, C concentration, should be considered as a design parameter to endow Fe-Mn twinning-induced plasticity steel with a better combination of strength and ductility.Seung-Joon LeeJeongho HanSukjin LeeSeok-Hyeon KangSang-Min LeeYoung-Kook LeeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Seung-Joon Lee Jeongho Han Sukjin Lee Seok-Hyeon Kang Sang-Min Lee Young-Kook Lee Design for Fe-high Mn alloy with an improved combination of strength and ductility
description	Abstract Recently, Fe-Mn twinning-induced plasticity steels with an austenite phase have been the course of great interest due to their excellent combination of tensile strength and ductility, which carbon steels have never been able to attain. Nevertheless, twinning-induced plasticity steels also exhibit a trade-off between strength and ductility, a longstanding dilemma for physical metallurgists, when fabricated based on the two alloy design parameters of stacking fault energy and grain size. Therefore, we investigated the tensile properties of three Fe-Mn austenitic steels with similar stacking fault energy and grain size, but different carbon concentrations. Surprisingly, when carbon concentration increased, both strength and ductility significantly improved. This indicates that the addition of carbon resulted in a proportionality between strength and ductility, instead of a trade-off between those characteristics. This new design parameter, C concentration, should be considered as a design parameter to endow Fe-Mn twinning-induced plasticity steel with a better combination of strength and ductility.
format	article
author	Seung-Joon Lee Jeongho Han Sukjin Lee Seok-Hyeon Kang Sang-Min Lee Young-Kook Lee
author_facet	Seung-Joon Lee Jeongho Han Sukjin Lee Seok-Hyeon Kang Sang-Min Lee Young-Kook Lee
author_sort	Seung-Joon Lee
title	Design for Fe-high Mn alloy with an improved combination of strength and ductility
title_short	Design for Fe-high Mn alloy with an improved combination of strength and ductility
title_full	Design for Fe-high Mn alloy with an improved combination of strength and ductility
title_fullStr	Design for Fe-high Mn alloy with an improved combination of strength and ductility
title_full_unstemmed	Design for Fe-high Mn alloy with an improved combination of strength and ductility
title_sort	design for fe-high mn alloy with an improved combination of strength and ductility
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/7eddf60c539541b8bd189fce8b8ed1b1
work_keys_str_mv	AT seungjoonlee designforfehighmnalloywithanimprovedcombinationofstrengthandductility AT jeonghohan designforfehighmnalloywithanimprovedcombinationofstrengthandductility AT sukjinlee designforfehighmnalloywithanimprovedcombinationofstrengthandductility AT seokhyeonkang designforfehighmnalloywithanimprovedcombinationofstrengthandductility AT sangminlee designforfehighmnalloywithanimprovedcombinationofstrengthandductility AT youngkooklee designforfehighmnalloywithanimprovedcombinationofstrengthandductility
_version_	1718395591367589888

Design for Fe-high Mn alloy with an improved combination of strength and ductility

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