Analysis of variant-pairing tendencies in lenticular martensite microstructures based on rank-1 connection

Abstract Herein, variant-pairing tendencies of lenticular martensite in an Fe–30Ni–0.3C (wt%) alloy are analyzed based on rank-1 connection at martensite/martensite junction planes (JPs) to facilitate the understanding of martensite microstructure. The degree of incompatibility (θ) at the JPs succes...

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Autores principales:	Yuri Shinohara, Satomu Akabane, Tomonari Inamura
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7c3284d8db4a4fad9a088311fc800a4d
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spelling	oai:doaj.org-article:7c3284d8db4a4fad9a088311fc800a4d2021-12-02T16:50:23ZAnalysis of variant-pairing tendencies in lenticular martensite microstructures based on rank-1 connection10.1038/s41598-021-93514-z2045-2322https://doaj.org/article/7c3284d8db4a4fad9a088311fc800a4d2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93514-zhttps://doaj.org/toc/2045-2322Abstract Herein, variant-pairing tendencies of lenticular martensite in an Fe–30Ni–0.3C (wt%) alloy are analyzed based on rank-1 connection at martensite/martensite junction planes (JPs) to facilitate the understanding of martensite microstructure. The degree of incompatibility (θ) at the JPs successfully explained their observed frequency; in the actual microstructure, variant pairs with a small θ form preferentially. The experimentally obtained JPs were consistent with theoretical ones. To the best of our knowledge, this is the first study to confirm the validity of variant-pair crystallography in steel based on rank-1 connection, both theoretically and experimentally. Diamond, composite-spear, and composite-kink clusters are considered. The cumulative θ at the JPs can suppress diamond cluster formation because it exceeds the θ of a single variant pair, and the diamond cluster is not observed experimentally. However, θ at the JPs cancel out in composite-spear (CS) and composite-kink (CK) clusters, but CK clusters are rarely observed experimentally, while a few CS clusters are observed. This demonstrates the analytical limitations of 2D approaches used to evaluate the frequency of variant pairs and clusters. These two variant clusters have a narrow window of 2D observation because the orientation relationships between JPs and intersection lines between two habit planes affect the areas of JPs.Yuri ShinoharaSatomu AkabaneTomonari InamuraNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yuri Shinohara Satomu Akabane Tomonari Inamura Analysis of variant-pairing tendencies in lenticular martensite microstructures based on rank-1 connection
description	Abstract Herein, variant-pairing tendencies of lenticular martensite in an Fe–30Ni–0.3C (wt%) alloy are analyzed based on rank-1 connection at martensite/martensite junction planes (JPs) to facilitate the understanding of martensite microstructure. The degree of incompatibility (θ) at the JPs successfully explained their observed frequency; in the actual microstructure, variant pairs with a small θ form preferentially. The experimentally obtained JPs were consistent with theoretical ones. To the best of our knowledge, this is the first study to confirm the validity of variant-pair crystallography in steel based on rank-1 connection, both theoretically and experimentally. Diamond, composite-spear, and composite-kink clusters are considered. The cumulative θ at the JPs can suppress diamond cluster formation because it exceeds the θ of a single variant pair, and the diamond cluster is not observed experimentally. However, θ at the JPs cancel out in composite-spear (CS) and composite-kink (CK) clusters, but CK clusters are rarely observed experimentally, while a few CS clusters are observed. This demonstrates the analytical limitations of 2D approaches used to evaluate the frequency of variant pairs and clusters. These two variant clusters have a narrow window of 2D observation because the orientation relationships between JPs and intersection lines between two habit planes affect the areas of JPs.
format	article
author	Yuri Shinohara Satomu Akabane Tomonari Inamura
author_facet	Yuri Shinohara Satomu Akabane Tomonari Inamura
author_sort	Yuri Shinohara
title	Analysis of variant-pairing tendencies in lenticular martensite microstructures based on rank-1 connection
title_short	Analysis of variant-pairing tendencies in lenticular martensite microstructures based on rank-1 connection
title_full	Analysis of variant-pairing tendencies in lenticular martensite microstructures based on rank-1 connection
title_fullStr	Analysis of variant-pairing tendencies in lenticular martensite microstructures based on rank-1 connection
title_full_unstemmed	Analysis of variant-pairing tendencies in lenticular martensite microstructures based on rank-1 connection
title_sort	analysis of variant-pairing tendencies in lenticular martensite microstructures based on rank-1 connection
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/7c3284d8db4a4fad9a088311fc800a4d
work_keys_str_mv	AT yurishinohara analysisofvariantpairingtendenciesinlenticularmartensitemicrostructuresbasedonrank1connection AT satomuakabane analysisofvariantpairingtendenciesinlenticularmartensitemicrostructuresbasedonrank1connection AT tomonariinamura analysisofvariantpairingtendenciesinlenticularmartensitemicrostructuresbasedonrank1connection
_version_	1718383046726516736

Analysis of variant-pairing tendencies in lenticular martensite microstructures based on rank-1 connection

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