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Evaluation of key geometrical and mechanical properties for remote laser welded AC-170PX aluminium joints
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Das, Abhishek, Butterworth, Ian, Masters, Iain and Williams, D. K. (2019) Evaluation of key geometrical and mechanical properties for remote laser welded AC-170PX aluminium joints. Journal of Laser Micro/Nanoengineering, 14 (1). doi:10.2961/jlmn.2019.01.0001 ISSN 1880-0688.
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Official URL: https://doi.org/10.2961/jlmn.2019.01.0001
Abstract
Use of lightweight materials to produce automotive body structures is one of the key trends adopted by automotive manufacturers to minimise emission of greenhouse gases, and subsequently, reduction of fuel consumption. Aluminium alloys are one of the promising lightweight materials which are increasingly used for automotive body-in-white structures. Such applications demand both efficient and effective joining/welding methods to produce repeatable, durable and strong joints without significant alteration of material properties. Remote laser welding (RLW) is an emerging joining technology and increasingly being used to produce lightweight joints as it satisfies the demand for high production throughput at low cost. This paper investigates the effects of process parameters when seam tracking remote laser welding is used to create an autogenous fillet edge weld of automotive grade aluminum alloy (AC-170PX) in lap configuration without shielding gas. The effects of laser power and welding speed on the key geometric features are reported together with details of the weld microstructure. Joint strength is evaluated by performing a lap shear test. It is found that the laser power and welding speed have dominant influence on key geometric features and subsequently on the lap shear strength. Relatively larger grain size in the fusion zone reduces the microhardness by up to 20% in comparison with the base material.
| Item Type: | Journal Article | |||||||||
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| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics T Technology > TS Manufactures |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||
| Library of Congress Subject Headings (LCSH): | Laser welding, Aluminum, Automobiles -- Welding | |||||||||
| Journal or Publication Title: | Journal of Laser Micro/Nanoengineering | |||||||||
| Publisher: | Japan Laser Processing Society | |||||||||
| ISSN: | 1880-0688 | |||||||||
| Official Date: | April 2019 | |||||||||
| Dates: |
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| Volume: | 14 | |||||||||
| Number: | 1 | |||||||||
| DOI: | 10.2961/jlmn.2019.01.0001 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Reuse Statement (publisher, data, author rights): | Copyright (C) 2019 Japan Laser Processing Society. This paper was published in Das, Abhishek, Butterworth, Ian, Masters, Iain and Williams, David K. (2019) Evaluation of key geometrical and mechanical properties for remote laser welded AC-170PX aluminium joints. Journal of Laser Micro/Nanoengineering, 14 (1). doi:10.2961/jlmn.2019.01.0001 and is made available as an electronic reprint (preprint) with permission of JLPS. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. | |||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||
| RIOXX Funder/Project Grant: |
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