Effect of Post Weld Heat Treatment on Notch Sensitivity Ratio of
Electron Beam Welded AA2024 Aluminum Alloy Joints 2023-01-5142
Aluminum alloy AA2024 stands out as a widely utilized age-hardening alloy in
aircraft applications worldwide. Despite its superior weldability in comparison
to its 6000-series counterparts, AA2024 still reveals vulnerability in the
welded joint. Specifically, in the T6 condition, the joint strength is only
about 40% of the strength exhibited by the base metal. Faced with this
challenge, design engineers often resort to selecting thicker base metal plates
due to notable disparities in strength values, particularly concerning yield
strength. AA2024 alloy is welded using low heat input electron beam welding.
This weld is eliminated all demerits in other fusion welding process. However,
heat affected zone is always a weaker region in all the fusion welding process.
Post weld heat treatment process, namely, solution treatment and artificial
ageing was performed to dimmish the width of weaker region. Of which, the joint
treated with solution treatment followed by ageing yielded higher strength. It
may be attributed by distribution of strengthening precipitates.
Author(s):
Ch Sandeep, R. Siva Subramanian, S. Gopikumar, M. Mohan Dass, P. Sethu Ramalingam, B. Vijaya Prakash
Affiliated:
Institute of Aeronautical Engineering, Department of Mechani, Sri Krishna College of Engineering and Technology, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Scie, Coimbatore Institute of Engineering and Technology, Mechanic, Rajalakshmi Institute of Technology, Department of Mechanica, Sri Shakthi Institute of Engineering and Technology, Departm
Pages: 8
Event:
International Conference on Trends in Automotive Parts Systems and Applications
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Aluminum alloys
Welding
Heat treatment
Materials properties
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »