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...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier Ltd
2019
|
| Subjects: | |
| Online Access: | 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 |
| _version_ | 1796993073634344960 |
|---|---|
| author | Khodabakhshi, Farzad L. H., Shah Gerlich, Adrian |
| author_facet | Khodabakhshi, Farzad L. H., Shah Gerlich, Adrian |
| author_sort | Khodabakhshi, Farzad |
| collection | UMP |
| 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. |
| first_indexed | 2024-03-06T12:28:46Z |
| format | Article |
| id | UMPir23244 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:28:46Z |
| publishDate | 2019 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | UMPir232442019-02-22T04:25:41Z 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. (Published) https://doi.org/10.1016/j.optlastec.2018.11.034 https://doi.org/10.1016/j.optlastec.2018.11.034 |
| 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 |
| title | 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_short | 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 |
| topic | TJ Mechanical engineering and machinery TN Mining engineering. Metallurgy |
| url | 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 |
| work_keys_str_mv | AT khodabakhshifarzad dissimilarlaserweldingofanaa6022az31lapjointbyusingniinterlayernovelbeamwobblingtechniqueprocessingparametersandmetallurgicalcharacterization AT lhshah dissimilarlaserweldingofanaa6022az31lapjointbyusingniinterlayernovelbeamwobblingtechniqueprocessingparametersandmetallurgicalcharacterization AT gerlichadrian dissimilarlaserweldingofanaa6022az31lapjointbyusingniinterlayernovelbeamwobblingtechniqueprocessingparametersandmetallurgicalcharacterization |