AA6082 T6 and MgAZ31 were successfully friction stir lap joined under various regimes of tool rotational and welding speeds. Force evolution as well microstructural evolution have been presented and discussed within the paper. All joints are characterized by the presence of three main metallurgical zones: nugget zone (NZ), dynamic recrystallized zone (DRZ) and interpenetrating feature zone (IPF). Furthermore, intermetallic compounds like Al12Mg17 and Al3Mg2 have been detected inside the NZ. The results of the forces analysis showed a non-univocal trend of the force components respect to the process parameters due to contrasting phenomena dictating material hardening and softening in the investigated processing window.

Dissimilar friction stir lap welding of AA 6082 - Mg AZ31: Force analysis and microstructure evolution

Antonello Astarita;Pierpaolo Carlone;Felice Rubino;
2019-01-01

Abstract

AA6082 T6 and MgAZ31 were successfully friction stir lap joined under various regimes of tool rotational and welding speeds. Force evolution as well microstructural evolution have been presented and discussed within the paper. All joints are characterized by the presence of three main metallurgical zones: nugget zone (NZ), dynamic recrystallized zone (DRZ) and interpenetrating feature zone (IPF). Furthermore, intermetallic compounds like Al12Mg17 and Al3Mg2 have been detected inside the NZ. The results of the forces analysis showed a non-univocal trend of the force components respect to the process parameters due to contrasting phenomena dictating material hardening and softening in the investigated processing window.
2019
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4731066
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