Strong and ductile Fe-24Mn-3Cr alloy resistant against erosion-corrosion

Abstract The ternary-based Fe-24Mn-3Cr alloy has superior mechanical properties based on an attractive combination of high strength and ductility, with long-term environmental stability in highly corrosive environments compared to conventional ferritic steel alloys. This study reports that the envir...

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Autores principales:	Yeong Jae Jeong, Si On Kim, Jin Sung Park, Jae Won Lee, Joong-Ki Hwang, Soon Gi Lee, Jong Kyo Choi, Sung Jin Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/f412605faa9c4c82bc03091e27be4f60
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spelling	oai:doaj.org-article:f412605faa9c4c82bc03091e27be4f602021-12-02T17:25:42ZStrong and ductile Fe-24Mn-3Cr alloy resistant against erosion-corrosion10.1038/s41529-021-00195-02397-2106https://doaj.org/article/f412605faa9c4c82bc03091e27be4f602021-09-01T00:00:00Zhttps://doi.org/10.1038/s41529-021-00195-0https://doaj.org/toc/2397-2106Abstract The ternary-based Fe-24Mn-3Cr alloy has superior mechanical properties based on an attractive combination of high strength and ductility, with long-term environmental stability in highly corrosive environments compared to conventional ferritic steel alloys. This study reports that the environmental instability caused by the rapid electrochemical corrosion kinetics on the surface of conventional high Mn-bearing ferrous alloys could be overcome by a combination of high Mn–low Cr-balanced Fe and their synergistic interactions. In contrast to Cr-free Mn-bearing alloys, the high Mn–low Cr-bearing alloy showed comparatively lower corrosion kinetic parameters, without a continuously increasing trend, and higher polarization resistance according to electrochemical polarization and impedance spectroscopy measurements. Moreover, the rate of degradation caused by erosion–corrosion synergistic interaction under erosion–corrosion dynamic flow conditions was the lowest in the high Mn–low Cr-bearing alloy. These surface-inhibiting characteristics of the alloy were attributed primarily to the formation of a bilayer scale structure consisting of inner α-Fe2−x Cr x O3/outer Fe x Mn3−x O4 on the surface.Yeong Jae JeongSi On KimJin Sung ParkJae Won LeeJoong-Ki HwangSoon Gi LeeJong Kyo ChoiSung Jin KimNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ENnpj Materials Degradation, Vol 5, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Yeong Jae Jeong Si On Kim Jin Sung Park Jae Won Lee Joong-Ki Hwang Soon Gi Lee Jong Kyo Choi Sung Jin Kim Strong and ductile Fe-24Mn-3Cr alloy resistant against erosion-corrosion
description	Abstract The ternary-based Fe-24Mn-3Cr alloy has superior mechanical properties based on an attractive combination of high strength and ductility, with long-term environmental stability in highly corrosive environments compared to conventional ferritic steel alloys. This study reports that the environmental instability caused by the rapid electrochemical corrosion kinetics on the surface of conventional high Mn-bearing ferrous alloys could be overcome by a combination of high Mn–low Cr-balanced Fe and their synergistic interactions. In contrast to Cr-free Mn-bearing alloys, the high Mn–low Cr-bearing alloy showed comparatively lower corrosion kinetic parameters, without a continuously increasing trend, and higher polarization resistance according to electrochemical polarization and impedance spectroscopy measurements. Moreover, the rate of degradation caused by erosion–corrosion synergistic interaction under erosion–corrosion dynamic flow conditions was the lowest in the high Mn–low Cr-bearing alloy. These surface-inhibiting characteristics of the alloy were attributed primarily to the formation of a bilayer scale structure consisting of inner α-Fe2−x Cr x O3/outer Fe x Mn3−x O4 on the surface.
format	article
author	Yeong Jae Jeong Si On Kim Jin Sung Park Jae Won Lee Joong-Ki Hwang Soon Gi Lee Jong Kyo Choi Sung Jin Kim
author_facet	Yeong Jae Jeong Si On Kim Jin Sung Park Jae Won Lee Joong-Ki Hwang Soon Gi Lee Jong Kyo Choi Sung Jin Kim
author_sort	Yeong Jae Jeong
title	Strong and ductile Fe-24Mn-3Cr alloy resistant against erosion-corrosion
title_short	Strong and ductile Fe-24Mn-3Cr alloy resistant against erosion-corrosion
title_full	Strong and ductile Fe-24Mn-3Cr alloy resistant against erosion-corrosion
title_fullStr	Strong and ductile Fe-24Mn-3Cr alloy resistant against erosion-corrosion
title_full_unstemmed	Strong and ductile Fe-24Mn-3Cr alloy resistant against erosion-corrosion
title_sort	strong and ductile fe-24mn-3cr alloy resistant against erosion-corrosion
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f412605faa9c4c82bc03091e27be4f60
work_keys_str_mv	AT yeongjaejeong strongandductilefe24mn3cralloyresistantagainsterosioncorrosion AT sionkim strongandductilefe24mn3cralloyresistantagainsterosioncorrosion AT jinsungpark strongandductilefe24mn3cralloyresistantagainsterosioncorrosion AT jaewonlee strongandductilefe24mn3cralloyresistantagainsterosioncorrosion AT joongkihwang strongandductilefe24mn3cralloyresistantagainsterosioncorrosion AT soongilee strongandductilefe24mn3cralloyresistantagainsterosioncorrosion AT jongkyochoi strongandductilefe24mn3cralloyresistantagainsterosioncorrosion AT sungjinkim strongandductilefe24mn3cralloyresistantagainsterosioncorrosion
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Strong and ductile Fe-24Mn-3Cr alloy resistant against erosion-corrosion

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