Estudio de la soldabilidad y resistencia mecánica de los aluminios estructurales AA6063 y AA6061 tratados térmicamente por proceso de envejecimiento, y soldados mediante proceso de soldadura GMAW.

Abstract

This paper focuses on the study of weldability and mechanical strength of the AA6063 and AA6061 aluminum alloys, under two different conditions: first, the two alloys heat treated by aging process and then welded by GMAW welding process; Moreover, a study of the weldability and mechanical strength of such alloys without undergoing heat treatment is included. Also within this work will be studied weldability and the mechanical strength of welded joints between the two alloys used for each case described above, with and without heat treatment. Both the AA6063 alloy and AA6061 exhibit good weldability and mechanical strength; however, in the case of thicker AA6061 shows greater presence of precipitates, which causes embrittlement in the filler material, and thus an impairment in its properties. Finally, both alloys show a good response to the tests carried out, with the particularity that the AA6061 alloy responds better in smaller thicknesses.