Dissimilar laser welding of an AA6022-AZ31 lap-joint by using Ni-interlayer: novel beam-wobbling technique, processing parameters, and metallurgical characterization

In this article, the weldability of dissimilar lap joints between 2 mm thick sheets of AA6022 aluminum (bottom) and AZ31 magnesium alloys (upper) was studied using a fiber laser with a wobbling scanner. The effects of laser beam wobbling parameters, laser power, traveling speed, and the presence of...

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Main Authors:	Khodabakhshi, Farzad, L. H., Shah, Gerlich, Adrian
Format:	Article
Language:	English
Published:	Elsevier Ltd 2019
Subjects:	TJ Mechanical engineering and machinery TN Mining engineering. Metallurgy
Online Access:	http://umpir.ump.edu.my/id/eprint/23244/ http://umpir.ump.edu.my/id/eprint/23244/ http://umpir.ump.edu.my/id/eprint/23244/ http://umpir.ump.edu.my/id/eprint/23244/1/%28Khodabakhshi%2C%202019%29%20Dissimilar%20laser%20welding%20of%20an%20AA6022-AZ31%20lap-joint%20by%20using%20Ni-interlayer%20Novel%20beam-wobbling%20technique%2C%20processing%20parameters%2C%20and%20metallurgical%20characterization.pdf

id	ump-23244
recordtype	eprints
spelling	ump-232442019-02-22T04:25:41Z http://umpir.ump.edu.my/id/eprint/23244/ Dissimilar laser welding of an AA6022-AZ31 lap-joint by using Ni-interlayer: novel beam-wobbling technique, processing parameters, and metallurgical characterization Khodabakhshi, Farzad L. H., Shah Gerlich, Adrian TJ Mechanical engineering and machinery TN Mining engineering. Metallurgy In this article, the weldability of dissimilar lap joints between 2 mm thick sheets of AA6022 aluminum (bottom) and AZ31 magnesium alloys (upper) was studied using a fiber laser with a wobbling scanner. The effects of laser beam wobbling parameters, laser power, traveling speed, and the presence of a pure nickel interlayer (∼0.1 mm thickness) is evaluated based on the microstructures and phases produced. The experimental results revealed dissimilar joint formation is highly dependent on inter-mixing, as well as fusion zone dimensions which control Al- and Mg-rich interaction zones that vary with laser power. Sound dissimilar joints were only produced by penetrating the Mg-rich interaction zone into the aluminum alloy. Joint formation benefited from suppression of Al-Mg chemical reactions using a Ni-interlayer, providing more well-dispersed and more benign phases compared to Al-Mg intermetallics at the interface during welding. The application of laser beam wobbling on a circular path with diameter of ∼0.4 mm and frequency of 1000 Hz served to reduce cracks and enhanced materials intermixing. Elsevier Ltd 2019-04 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/23244/1/%28Khodabakhshi%2C%202019%29%20Dissimilar%20laser%20welding%20of%20an%20AA6022-AZ31%20lap-joint%20by%20using%20Ni-interlayer%20Novel%20beam-wobbling%20technique%2C%20processing%20parameters%2C%20and%20metallurgical%20characterization.pdf Khodabakhshi, Farzad and L. H., Shah and Gerlich, Adrian (2019) Dissimilar laser welding of an AA6022-AZ31 lap-joint by using Ni-interlayer: novel beam-wobbling technique, processing parameters, and metallurgical characterization. Optics & Laser Technology, 112. pp. 349-362. ISSN 0030-3992 https://doi.org/10.1016/j.optlastec.2018.11.034 https://doi.org/10.1016/j.optlastec.2018.11.034
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery TN Mining engineering. Metallurgy
spellingShingle	TJ Mechanical engineering and machinery TN Mining engineering. Metallurgy Khodabakhshi, Farzad L. H., Shah Gerlich, Adrian Dissimilar laser welding of an AA6022-AZ31 lap-joint by using Ni-interlayer: novel beam-wobbling technique, processing parameters, and metallurgical characterization
description	In this article, the weldability of dissimilar lap joints between 2 mm thick sheets of AA6022 aluminum (bottom) and AZ31 magnesium alloys (upper) was studied using a fiber laser with a wobbling scanner. The effects of laser beam wobbling parameters, laser power, traveling speed, and the presence of a pure nickel interlayer (∼0.1 mm thickness) is evaluated based on the microstructures and phases produced. The experimental results revealed dissimilar joint formation is highly dependent on inter-mixing, as well as fusion zone dimensions which control Al- and Mg-rich interaction zones that vary with laser power. Sound dissimilar joints were only produced by penetrating the Mg-rich interaction zone into the aluminum alloy. Joint formation benefited from suppression of Al-Mg chemical reactions using a Ni-interlayer, providing more well-dispersed and more benign phases compared to Al-Mg intermetallics at the interface during welding. The application of laser beam wobbling on a circular path with diameter of ∼0.4 mm and frequency of 1000 Hz served to reduce cracks and enhanced materials intermixing.
format	Article
author	Khodabakhshi, Farzad L. H., Shah Gerlich, Adrian
author_facet	Khodabakhshi, Farzad L. H., Shah Gerlich, Adrian
author_sort	Khodabakhshi, Farzad
title	Dissimilar laser welding of an AA6022-AZ31 lap-joint by using Ni-interlayer: novel beam-wobbling technique, processing parameters, and metallurgical characterization
title_short	Dissimilar laser welding of an AA6022-AZ31 lap-joint by using Ni-interlayer: novel beam-wobbling technique, processing parameters, and metallurgical characterization
title_full	Dissimilar laser welding of an AA6022-AZ31 lap-joint by using Ni-interlayer: novel beam-wobbling technique, processing parameters, and metallurgical characterization
title_fullStr	Dissimilar laser welding of an AA6022-AZ31 lap-joint by using Ni-interlayer: novel beam-wobbling technique, processing parameters, and metallurgical characterization
title_full_unstemmed	Dissimilar laser welding of an AA6022-AZ31 lap-joint by using Ni-interlayer: novel beam-wobbling technique, processing parameters, and metallurgical characterization
title_sort	dissimilar laser welding of an aa6022-az31 lap-joint by using ni-interlayer: novel beam-wobbling technique, processing parameters, and metallurgical characterization
publisher	Elsevier Ltd
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/23244/ http://umpir.ump.edu.my/id/eprint/23244/ http://umpir.ump.edu.my/id/eprint/23244/ http://umpir.ump.edu.my/id/eprint/23244/1/%28Khodabakhshi%2C%202019%29%20Dissimilar%20laser%20welding%20of%20an%20AA6022-AZ31%20lap-joint%20by%20using%20Ni-interlayer%20Novel%20beam-wobbling%20technique%2C%20processing%20parameters%2C%20and%20metallurgical%20characterization.pdf
first_indexed	2023-09-18T22:34:43Z
last_indexed	2023-09-18T22:34:43Z
_version_	1777416518389202944

Dissimilar laser welding of an AA6022-AZ31 lap-joint by using Ni-interlayer: novel beam-wobbling technique, processing parameters, and metallurgical characterization

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