article · Journal of Materials Research and Technology
This study investigated how welding parameters and post-weld heat treatment affect the mechanical properties and corrosion resistance of friction stir welded dissimilar 6101-T6 and 7075-T651 aluminium alloys. Researchers varied tool rotational and welding speeds, and applied post-weld heat treatment, then characterised the resulting microstructure and mechanical characteristics. Key findings include that increasing rotational speed decreased tensile strength, while increasing welding speed improved it. Corrosion behaviour varied significantly with different parameter combinations. Post-weld heat treatment enhanced mechanical properties by refining grain structure but reduced corrosion resistance. This research provides a foundation for optimising welding processes for these specific aluminium alloy grades.
Understanding how welding parameters and heat treatments influence aluminium alloys is crucial for manufacturing durable components. This research helps engineers select optimal settings to achieve desired mechanical strength and corrosion resistance, which is vital for applications where these alloys are used, ensuring product reliability and longevity.
This research provides foundational knowledge for optimising welding processes for specific dissimilar aluminium alloys. It could inform manufacturing engineers and material scientists in industries using these alloys, such as aerospace or automotive, to improve product performance and reliability. This is early-stage research focused on process optimisation rather than a direct product, aiming to refine manufacturing techniques.
AI-generated from the published abstract. Always read the original work before citing.
A study on how corrosion and mechanical characteristics of friction stir welded joints are affected by processing parameters employed during the welding and the post-weld heat treatment administered on the welded materials has been reported in this paper. This study specifically investigated the effects of variable parameters such as the tool rotational and welding speeds and the post-weld heat treatment on the mechanical and corrosion behaviour of the friction stir welded dissimilar 6101-T6 and 7075-T651 Aluminium Alloys. The welded samples were characterized by the evolving microstructure and mechanical characteristics. The results show that the tensile strength of the joints decreases from 154 MPa to 144 MPa when the rotational speed increases from 950 rpm to 1550 rpm. However, the tensile strength increases from 138 MPa to 154 MPa with an increase in the welding speed from 20 mm/min to 110 mm/min. This is due to high heat input at higher rotational speed which weakens the bonding strength at the joints. The corrosion behaviour was observed to differ at different parameters. The corrosion inhibition efficiency was highest at a rotational speed of 950 rpm, welding speed of 65 mm/min, and lowest at 950 rpm and 20 mm/min. It was observed that the Post-Weld Heat Treatment (PWHT) process enhanced the mechanical properties as a result of an improvement in the grain refinement but lowered the corrosion resistance. This study is significant as it informs the basis for the optimization of processing parameters and post weld heat treatment for dissimilar aluminium alloys for the grades considered in this study.
This page summarises published work. The authoritative version sits with the publisher.
DOI: 10.1016/j.jmrt.2024.07.175
Is something wrong with this record? Report it or request removal.
Discussion
Have you built on this work, tried to replicate it, or seen it applied in practice? Share what you know. Verified researchers and MARATTO™ domain experts can open a discussion, and any member can reply. Contributions are reviewed before they appear.
No discussion yet. Open the first thread.
New to MARATTO™? Create a free account.
