The effect of AlFeSi intermetallics compounds morphology on the corrosion behavior of Al–Mg–Si alloy laser welds

This work investigated the relationship between the morphology of AlFeSi intermetallics compounds (IMCs) and grains, and its influence on the corrosion behavior of the surface of Al–Mg–Si alloy laser welds. Due to the segregation of solute elements on the grain boundary, coarse AlFeSi IMCs were more...

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Main Authors:	Xia-Ming Chen, Xiao-Nan Wang, Qi-Peng Dong, Jia-Min Yu, Zhen Zhu, Hiromi Nagaumi
Format:	Article
Language:	English
Published:	Elsevier 2021-09-01
Series:	Journal of Materials Research and Technology
Subjects:	Al–Mg–Si alloy Welding AlFeSi IMCs Corrosion
Online Access:	http://www.sciencedirect.com/science/article/pii/S2238785421007031

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record_format	Article
spelling	doaj-955d405b51024e22ae08f2532971ec3b2021-09-25T05:06:58ZengElsevierJournal of Materials Research and Technology2238-78542021-09-011412031207The effect of AlFeSi intermetallics compounds morphology on the corrosion behavior of Al–Mg–Si alloy laser weldsXia-Ming Chen0Xiao-Nan Wang1Qi-Peng Dong2Jia-Min Yu3Zhen Zhu4Hiromi Nagaumi5School of Iron and Steel, Soochow University, Suzhou 215021, China; High-Performance Metal Structural Materials Research Institute, Soochow University, Suzhou 215021, ChinaSchool of Iron and Steel, Soochow University, Suzhou 215021, China; Corresponding author.School of Iron and Steel, Soochow University, Suzhou 215021, China; High-Performance Metal Structural Materials Research Institute, Soochow University, Suzhou 215021, ChinaSchool of Iron and Steel, Soochow University, Suzhou 215021, ChinaSchool of Iron and Steel, Soochow University, Suzhou 215021, ChinaSchool of Iron and Steel, Soochow University, Suzhou 215021, China; High-Performance Metal Structural Materials Research Institute, Soochow University, Suzhou 215021, China; Corresponding author.This work investigated the relationship between the morphology of AlFeSi intermetallics compounds (IMCs) and grains, and its influence on the corrosion behavior of the surface of Al–Mg–Si alloy laser welds. Due to the segregation of solute elements on the grain boundary, coarse AlFeSi IMCs were more likely to precipitate along the grain boundary. As a result, the “linear-like” AlFeSi IMCs was only found along the straight grain boundary of columnar grains, leading to the deterioration of corrosion resistance, but for the equiaxed grains, only small rod-like AlFeSi IMCs was along the grain boundary. Compared to the small rod-like AlFeSi IMCs at GBs of equiaxed grains, the “linear-like” AlFeSi IMCs at the straight GBs of columnar grains increased the interface area between α-Al, leading to a more evident intergranular corrosion at columnar boundary.http://www.sciencedirect.com/science/article/pii/S2238785421007031Al–Mg–Si alloyWeldingAlFeSi IMCsCorrosion
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Xia-Ming Chen Xiao-Nan Wang Qi-Peng Dong Jia-Min Yu Zhen Zhu Hiromi Nagaumi
spellingShingle	Xia-Ming Chen Xiao-Nan Wang Qi-Peng Dong Jia-Min Yu Zhen Zhu Hiromi Nagaumi The effect of AlFeSi intermetallics compounds morphology on the corrosion behavior of Al–Mg–Si alloy laser welds Journal of Materials Research and Technology Al–Mg–Si alloy Welding AlFeSi IMCs Corrosion
author_facet	Xia-Ming Chen Xiao-Nan Wang Qi-Peng Dong Jia-Min Yu Zhen Zhu Hiromi Nagaumi
author_sort	Xia-Ming Chen
title	The effect of AlFeSi intermetallics compounds morphology on the corrosion behavior of Al–Mg–Si alloy laser welds
title_short	The effect of AlFeSi intermetallics compounds morphology on the corrosion behavior of Al–Mg–Si alloy laser welds
title_full	The effect of AlFeSi intermetallics compounds morphology on the corrosion behavior of Al–Mg–Si alloy laser welds
title_fullStr	The effect of AlFeSi intermetallics compounds morphology on the corrosion behavior of Al–Mg–Si alloy laser welds
title_full_unstemmed	The effect of AlFeSi intermetallics compounds morphology on the corrosion behavior of Al–Mg–Si alloy laser welds
title_sort	effect of alfesi intermetallics compounds morphology on the corrosion behavior of al–mg–si alloy laser welds
publisher	Elsevier
series	Journal of Materials Research and Technology
issn	2238-7854
publishDate	2021-09-01
description	This work investigated the relationship between the morphology of AlFeSi intermetallics compounds (IMCs) and grains, and its influence on the corrosion behavior of the surface of Al–Mg–Si alloy laser welds. Due to the segregation of solute elements on the grain boundary, coarse AlFeSi IMCs were more likely to precipitate along the grain boundary. As a result, the “linear-like” AlFeSi IMCs was only found along the straight grain boundary of columnar grains, leading to the deterioration of corrosion resistance, but for the equiaxed grains, only small rod-like AlFeSi IMCs was along the grain boundary. Compared to the small rod-like AlFeSi IMCs at GBs of equiaxed grains, the “linear-like” AlFeSi IMCs at the straight GBs of columnar grains increased the interface area between α-Al, leading to a more evident intergranular corrosion at columnar boundary.
topic	Al–Mg–Si alloy Welding AlFeSi IMCs Corrosion
url	http://www.sciencedirect.com/science/article/pii/S2238785421007031
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The effect of AlFeSi intermetallics compounds morphology on the corrosion behavior of Al–Mg–Si alloy laser welds

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