The main objective of the present work was to establish a friction stir welding (FSW) process parameters envelope for an AA7005 alloy reinforced with 10% of Al2O3, and determine properties of the obtained joints. After a brief description of the FSW technique, and the difficulties in joining MMCs, the experimental procedure employed is illustrated. The microstructure has been observed with an optical microscope, and images have been analysed with an image analysis software. Microhardness and tensile tests have been also carried out. It has been observed that the tool's stirring effect has a substantial influence on the reinforcement particles' distribution and shape. Tensile testing revealed joint efficiencies of about 100% for both the YS and the UTS, with failure outside the stir zone. The parameter envelope determined in the present study resulted in defect free, high strength welds. Results also indicate that the alloy investigated could be welded with process parameter comparable to those used for its non-reinforced counterpart.
Friction stir welding of an AA7005/Al2O3/10% reinforced alloy / Marzoli, L. M.; Strombeck, A. V.; Dos Santos, J. F.; Gambaro, C.; Volpone, L. M.; Rizzuto, E.. - 1:(2004), pp. 1-10. (Intervento presentato al convegno ECCM 2004 - 11th European Conference on Composite Materials tenutosi a Rhodes (GR)).
Friction stir welding of an AA7005/Al2O3/10% reinforced alloy
Rizzuto E.
2004
Abstract
The main objective of the present work was to establish a friction stir welding (FSW) process parameters envelope for an AA7005 alloy reinforced with 10% of Al2O3, and determine properties of the obtained joints. After a brief description of the FSW technique, and the difficulties in joining MMCs, the experimental procedure employed is illustrated. The microstructure has been observed with an optical microscope, and images have been analysed with an image analysis software. Microhardness and tensile tests have been also carried out. It has been observed that the tool's stirring effect has a substantial influence on the reinforcement particles' distribution and shape. Tensile testing revealed joint efficiencies of about 100% for both the YS and the UTS, with failure outside the stir zone. The parameter envelope determined in the present study resulted in defect free, high strength welds. Results also indicate that the alloy investigated could be welded with process parameter comparable to those used for its non-reinforced counterpart.| File | Dimensione | Formato | |
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2004-ECCM11 FRICTION STIR WELDING OF AN AA7005.pdf
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