Role of dislocation elastic field on impurity segregation in Fe-based alloys

Abstract Dislocation engineering in crystalline materials is essential when designing materials for a large range of applications. Segregation of additional elements at dislocations is frequently used to modify the influence of dislocations on material properties. Thus, the influence of the dislocat...

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Autores principales:	I. Medouni, A. Portavoce, P. Maugis, P. Eyméoud, M. Yescas, K. Hoummada
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/74017bd2346449cd9cd3e02ff293c019
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spelling	oai:doaj.org-article:74017bd2346449cd9cd3e02ff293c0192021-12-02T10:49:11ZRole of dislocation elastic field on impurity segregation in Fe-based alloys10.1038/s41598-020-80140-42045-2322https://doaj.org/article/74017bd2346449cd9cd3e02ff293c0192021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80140-4https://doaj.org/toc/2045-2322Abstract Dislocation engineering in crystalline materials is essential when designing materials for a large range of applications. Segregation of additional elements at dislocations is frequently used to modify the influence of dislocations on material properties. Thus, the influence of the dislocation elastic field on impurity segregation is of major interest, as its understanding should lead to engineering solutions that improve the material properties. We report the experimental study of the elastic field influence on atomic segregation in the core and in the area surrounding edge dislocations in Fe-based alloys. Each element is found either to segregate in the edge dislocation core or to form atmospheres. The elastic field has a strong effect on the segregation atmosphere, but no effect on the dislocation core segregation. The theory is in good agreement with experiments, and should support dislocation engineering.I. MedouniA. PortavoceP. MaugisP. EyméoudM. YescasK. HoummadaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q I. Medouni A. Portavoce P. Maugis P. Eyméoud M. Yescas K. Hoummada Role of dislocation elastic field on impurity segregation in Fe-based alloys
description	Abstract Dislocation engineering in crystalline materials is essential when designing materials for a large range of applications. Segregation of additional elements at dislocations is frequently used to modify the influence of dislocations on material properties. Thus, the influence of the dislocation elastic field on impurity segregation is of major interest, as its understanding should lead to engineering solutions that improve the material properties. We report the experimental study of the elastic field influence on atomic segregation in the core and in the area surrounding edge dislocations in Fe-based alloys. Each element is found either to segregate in the edge dislocation core or to form atmospheres. The elastic field has a strong effect on the segregation atmosphere, but no effect on the dislocation core segregation. The theory is in good agreement with experiments, and should support dislocation engineering.
format	article
author	I. Medouni A. Portavoce P. Maugis P. Eyméoud M. Yescas K. Hoummada
author_facet	I. Medouni A. Portavoce P. Maugis P. Eyméoud M. Yescas K. Hoummada
author_sort	I. Medouni
title	Role of dislocation elastic field on impurity segregation in Fe-based alloys
title_short	Role of dislocation elastic field on impurity segregation in Fe-based alloys
title_full	Role of dislocation elastic field on impurity segregation in Fe-based alloys
title_fullStr	Role of dislocation elastic field on impurity segregation in Fe-based alloys
title_full_unstemmed	Role of dislocation elastic field on impurity segregation in Fe-based alloys
title_sort	role of dislocation elastic field on impurity segregation in fe-based alloys
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/74017bd2346449cd9cd3e02ff293c019
work_keys_str_mv	AT imedouni roleofdislocationelasticfieldonimpuritysegregationinfebasedalloys AT aportavoce roleofdislocationelasticfieldonimpuritysegregationinfebasedalloys AT pmaugis roleofdislocationelasticfieldonimpuritysegregationinfebasedalloys AT peymeoud roleofdislocationelasticfieldonimpuritysegregationinfebasedalloys AT myescas roleofdislocationelasticfieldonimpuritysegregationinfebasedalloys AT khoummada roleofdislocationelasticfieldonimpuritysegregationinfebasedalloys
_version_	1718396598100164608

Role of dislocation elastic field on impurity segregation in Fe-based alloys

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