Welding characteristics and mechanism between aluminum alloy and alumina by friction stir spot welding
- Yasui T. ,
- Kamihara T. and
- Fukumoto M.
- Yasui T. ,
- Kamihara T. and
- Fukumoto M.
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Dissimilar joints between an AA 5052 aluminium alloy sheet (thickness 1 mm) and an alumina plate (thickness 10 mm) were fabricated by friction stir spot welding (FSSW) and their microstructure and mechanical properties were investigated. Welding was conducted using a load controlled FSSW machine at a welding pressure of 5.6 kN, rotational speed of 1000-3000 rpm and holding time of 1-3 s. Joint microstructure and fracture surfaces were observed by optical microscopy, SEM and energy dispersive X-ray analysis. Weld strength was determined by tensile shear tests. The temperature distribution at the weld interface was studied by thermocouple measurements. The alumina surface was examined by laser microscopy after removal of aluminium by NaOH solution.
11th International Symposium, 17-19 May 2016, Poster Session, Paper 13
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