The influence of weld microstructure on mechanical properties of refill friction spot welding of 5042 aluminium alloy
- Tier M. ,
- Rosendo T. ,
- Olea C.W. ,
- et al
- Tier M. ,
- Rosendo T. ,
- Olea C.W. ,
- Mazzaferro C. ,
- Ramos F.D. ,
- Bayer M. ,
- dos Santos J.F. ,
- da Silva A.A.M. ,
- Mazzaferro J. and
- Strohaecker T.R.
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Sleeve plunge friction spot welding was employed to join AA5042 aluminium alloys under various process conditions and the microstructure and the mechanical properties of the welded joints were investigated. Welding was performed using a three-piece tool system consisting of clamping ring, sleeve and pin. The parameters varied during experiments were rotational speed (900-1900 rpm) and sleeve plunge rate (1.16-1.86 mm/s). Weld zone microstructures were observed by optical microscopy and SEM. Mechanical properties were characterised by hardness measurements and shear tests. Issues discussed include the formation of volumetric defects, joint interface profile, bonding ligament length and the relationship between shear strength and tool rotational speed.
7th International Symposium, 20-22 May 2008, 7A: Spot 2 (Mg/Fe/Al), Paper 02
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