Abstract
Cold Metal Transfer (CMT) is a novel process and has been used in joining of thin sheets with low heat input. In this present study, a 2mm thick aluminium sheet is welded using 4043 filler material. After welding the same is solutionized at 530°C for 45 minutes and further aged at 175°C for 8 hours. It has been observed that aged AA2024 alloy possesses improved tensile strength of 41 MPa more than the solutionized alloy. The microhardness distribution of HAZ shows 250 HV of increasing trend in aged and 145 HV of decreasing trend in solutionized condition. The enhancement of the mechanical properties was attributed to the formation of precipitates during heat treatment.
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