Mechanical properties vs torque analysis during friction stir welding of aluminium plates
- Vucetich D.A. ,
- Feloy L.E. and
- Gonzalez A.C.
- Vucetich D.A. ,
- Feloy L.E. and
- Gonzalez A.C.
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AA 2219 aluminium alloy sheets (thickness 2.5 mm) were joined by friction stir welding (FSW) and an investigation was undertaken into the relationship between joint mechanical properties, the torque generated by the spindle motor and process variables (tool rotational speed, traverse speed and tool design). FSW was performed using a 3-axis milling machine at rotational speeds of 1100-3000 rpm and traverse speeds of 30-180 mm/min. The defect free weld condition was verified by visual inspection, the ink test and radiography. Cross sectional microstructure was observed by optical microscopy and tensile tests were carried out with an extensometer. Issues discussed include ultimate tensile strength as a function of rotational speed, the influence of strain rate on equicohesive temperature and deformation mechanisms during the welding process.
11th International Symposium, 17-19 May 2016, Poster Session, Paper 02
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