Advanced Welding Techniques Analysis
Peer reviewed
Abstract
Abstract
This study investigates the influence of Zn and Sn interlayers on the microstructure and mechanical properties of dissimilar friction stir welds between AA7075-T651 aluminum alloy and AZ31B magnesium alloy. Joints produced without an interlayer exhibited poor material mixing, interfacial cracking, and root defects. The use of a Sn interlayer produced a homogeneous lamellar stir zone with fine, discontinuous Mg 2 Sn intermetallic layer (thickness <1.2 μm), effectively suppressing continuous brittle Al–Mg intermetallic phases. This resulted in the highest tensile strength (76.4 MPa, ∼29.6% joint efficiency), highest peak hardness (154.4 HV), and improved ductility, with fracture shifting to the stir zone (SZ) / thermomechanically affected zone (TMAZ) interface region on the Mg side. In contrast, the Zn interlayer offered only limited improvement (53.81 MPa) due to incomplete dispersion, residual defects, and localized MgZn 2 formation. No continuous intermetallic layers were observed in any joints, and fracture surfaces predominantly showed brittle morphology associated with intermixing defects and localized intermetallics. The findings demonstrate that interlayer effectiveness in Al–Mg dissimilar friction stir welding (FSW) is governed primarily by material flow compatibility rather than chemical barrier effects, providing new directions for interlayer selection and design in dissimilar friction stir welding.
Direct answer
What can I do from this paper page?
Use this page to scan "Effect of Zn and Sn interlayers on microstructure and mechanical properties of dissimilar AA7075–AZ31B friction stir welds" quickly: start with the summary and abstract, then check the authors, source, topics, and related papers. From here, open Scollr to follow Advanced Welding Techniques Analysis research, save the paper, or map adjacent work.
Research areas
Follow related topics
Citation
BibTeX
@article{Khan2026Effect,
title = {Effect of Zn and Sn interlayers on microstructure and mechanical properties of dissimilar AA7075–AZ31B friction stir welds},
author = {Afnan Haider Khan and Rizwan M. Gul and Muhammad Ali Kamran and Muhammad Ramzan Abdul Karim and Khuram Shahzad},
journal = {Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications},
year = {2026},
doi = {10.1177/14644207261458806},
url = {https://doi.org/10.1177/14644207261458806}
}FAQ
Using this paper in a discovery workflow
How do I find related work for this paper?
Use the related papers and topic links on this page as starting points. In Scollr, you can also open the paper and build a literature map around its references, citing papers, and related work.
How can I keep up with new Advanced Welding Techniques Analysis research papers?
Follow Advanced Welding Techniques Analysis research in Scollr. New papers from the topic flow into a personalized feed, and you can save useful studies to revisit later.
Can I cite this paper from this page?
This page includes a static BibTeX block for Effect of Zn and Sn interlayers on microstructure and mechanical properties of dissimilar AA7075–AZ31B friction stir welds. Always verify the DOI, source, and publication details against the publisher record before submitting a manuscript.
Follow this research in Scollr
Follow the topics and authors behind this paper, save useful studies, and build a literature map when you are ready to go deeper.
Get the app