Modeling of chemical composition in the melt pool during laser welding of Aluminum / Magnesium alloys

Joining dissimilar metals is very difficult due to the formation of brittle intermetallic phases which may be detrimental to mechanical properties. The present work aims to investigate the transport phenomenon in the weld bead and to understand the materials mixing during laser welding process of di...

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Autores principales:	Ben Halim Sabrine, kriaa Wassim, Autric Michel
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/56807bfc07a74724ac7d7d063f22c346
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spelling	oai:doaj.org-article:56807bfc07a74724ac7d7d063f22c3462021-11-12T11:44:34ZModeling of chemical composition in the melt pool during laser welding of Aluminum / Magnesium alloys2267-124210.1051/e3sconf/202132101008https://doaj.org/article/56807bfc07a74724ac7d7d063f22c3462021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/97/e3sconf_icchmt2021_01008.pdfhttps://doaj.org/toc/2267-1242Joining dissimilar metals is very difficult due to the formation of brittle intermetallic phases which may be detrimental to mechanical properties. The present work aims to investigate the transport phenomenon in the weld bead and to understand the materials mixing during laser welding process of dissimilar Aluminum-Magnesium alloys. A three-dimensional transient model based on fluid flow, heat and mass transfer has been developed to predict the formation of the weld and to study numerically and experimentally the diffusion of alloying elements in the melted zone. SEM analysis of chemical composition has been realized to map elements distribution in the melted zone. The results of simulation show the formation of a heterogeneous mixture in the melt pool. The elements distribution map and the presence of brittle intermetallic phases in the fusion zone were analysed. The formation of intermetallic compounds, comprising Al3Mg2 and Al12Mg17 phases were predicted by studying the chemical elements distribution in the weld pool. A good tendency between experimental and numerical results is noticed for the weld.Ben Halim Sabrinekriaa WassimAutric MichelEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 321, p 01008 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Ben Halim Sabrine kriaa Wassim Autric Michel Modeling of chemical composition in the melt pool during laser welding of Aluminum / Magnesium alloys
description	Joining dissimilar metals is very difficult due to the formation of brittle intermetallic phases which may be detrimental to mechanical properties. The present work aims to investigate the transport phenomenon in the weld bead and to understand the materials mixing during laser welding process of dissimilar Aluminum-Magnesium alloys. A three-dimensional transient model based on fluid flow, heat and mass transfer has been developed to predict the formation of the weld and to study numerically and experimentally the diffusion of alloying elements in the melted zone. SEM analysis of chemical composition has been realized to map elements distribution in the melted zone. The results of simulation show the formation of a heterogeneous mixture in the melt pool. The elements distribution map and the presence of brittle intermetallic phases in the fusion zone were analysed. The formation of intermetallic compounds, comprising Al3Mg2 and Al12Mg17 phases were predicted by studying the chemical elements distribution in the weld pool. A good tendency between experimental and numerical results is noticed for the weld.
format	article
author	Ben Halim Sabrine kriaa Wassim Autric Michel
author_facet	Ben Halim Sabrine kriaa Wassim Autric Michel
author_sort	Ben Halim Sabrine
title	Modeling of chemical composition in the melt pool during laser welding of Aluminum / Magnesium alloys
title_short	Modeling of chemical composition in the melt pool during laser welding of Aluminum / Magnesium alloys
title_full	Modeling of chemical composition in the melt pool during laser welding of Aluminum / Magnesium alloys
title_fullStr	Modeling of chemical composition in the melt pool during laser welding of Aluminum / Magnesium alloys
title_full_unstemmed	Modeling of chemical composition in the melt pool during laser welding of Aluminum / Magnesium alloys
title_sort	modeling of chemical composition in the melt pool during laser welding of aluminum / magnesium alloys
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/56807bfc07a74724ac7d7d063f22c346
work_keys_str_mv	AT benhalimsabrine modelingofchemicalcompositioninthemeltpoolduringlaserweldingofaluminummagnesiumalloys AT kriaawassim modelingofchemicalcompositioninthemeltpoolduringlaserweldingofaluminummagnesiumalloys AT autricmichel modelingofchemicalcompositioninthemeltpoolduringlaserweldingofaluminummagnesiumalloys
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Modeling of chemical composition in the melt pool during laser welding of Aluminum / Magnesium alloys

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