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Design guideline for intermetallic compound mitigation in Al-Mg dissimilar welding through addition of interlayer

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Abstract

This paper critically assesses the recent trends in aluminum-magnesium dissimilar welding and suggests a key design guideline to successfully improve the weld joint quality through addition of interlayer. First, the paper describes the main issue of incompatibility between these metals and considers the root cause of the problem, i.e., the Al-Mg-based intermetallic compounds (IMCs). It then reviews the recent trends of interlayer addition in various welding processes to mitigate Al-Mg IMCs. Focusing on laser welding, the paper finally proposes a 3-step design guideline in Al-Mg dissimilar welding through addition of an interlayer and presents a case study of using pure Ni foil as a proof of concept. The design guideline has shown to be an effective means to predict and prevent the formation of deleterious intermetallics.

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Authors and Affiliations

  1. Centre for Advanced Materials Joining, Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada

    L. H. Shah, A. Gerlich & Y. Zhou

  2. Faculty of Mechanical Engineering, Universiti Malaysia Pahang, Pekan, Pahang, Malaysia

    L. H. Shah

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  1. L. H. Shah
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  3. Y. Zhou
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Correspondence to L. H. Shah.

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Shah, L.H., Gerlich, A. & Zhou, Y. Design guideline for intermetallic compound mitigation in Al-Mg dissimilar welding through addition of interlayer. Int J Adv Manuf Technol 94, 2667–2678 (2018). https://doi.org/10.1007/s00170-017-1038-y

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