Effect of post-weld heat treatment on dissimilar friction stir welded AA6063 and A319 aluminium alloys
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M. Muthu Krishnan
Abstract
The effects of post-weld heat treatment at a solution temperature of 540 °C for 5 hrs 30 mins followed by ageing at 190 °C for 6 hrs on microstructure and mechanical properties of friction stir welded dissimilar aluminium alloys A319 and AA6063 have been examined. Post-weld ageing results in improved mechanical properties. The effect of ageing on the morphology of the second phase particles of silicon, copper and iron in the stir zone has been studied. The hardness of the stir zone for both as-welded and post-weld ageing was found to be lower than that of AA6063 but higher than A319 base metal. Microstructural studies reveal that the A319 dominates the stir zone.
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© 2014, Carl Hanser Verlag, München
Artikel in diesem Heft
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Artikel in diesem Heft
- Contents
- Contents
- Review
- Research trends in microwave dielectrics and factors affecting their properties: A review
- Original Contributions
- Efficiency and work performance of TiNi alloy undergoing B2 ↔ R martensitic transformation
- Fabrication of Gasar made from Cu-24 wt.% Mn alloy
- Effect of intermediate frequency electromagnetic field on the solidification structure and mechanical properties of direct chill cast Al-8 wt.%Si alloy
- Effect of Ni-based conversion coating and Ni–P electroless plating on the bonding process of pure Al and AZ31 alloy
- Effect of ball milling time on the synthesis of nanocrystalline merwinite via mechanical activation and heat treatment
- Structural and magnetic properties of Fe–Al2O3 soft magnetic composites prepared using the sol–gel method
- Improved dielectric performance of barium strontium titanate multilayered capacitor by means of pulsed laser deposition and slow injection sol–gel methods
- Effect of heat treatment on the slurry erosion resistance of high strength steel DP980
- Development of biomimetic gelatin–chitosan/hydroxyapatite nanocomposite via double diffusion method for biomedical applications
- Short Communications
- Effects of rolling rate on microstructure and mechanical properties of Mg sheets
- Effect of post-weld heat treatment on dissimilar friction stir welded AA6063 and A319 aluminium alloys
- Dielectric and magnetic properties of Ba0.8Sr0.2TiO3 – Y3Fe5O12 – YFeO3 composites
- Microwave-assisted modulated synthesis of zirconium-based metal–organic framework (Zr-MOF) for hydrogen storage applications
- DGM News
- DGM News
