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INFLUENCE OF SOLUTION TREATMENT TIME, ZN ADDITION AND COLD/HOT ROLLING ON THE MICROSTRUCTURE AND HARDNESS OF THE 2024 ALLOY

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Fig. 1 SEM images (i) of 2024 alloy as a function of the Zn addition and solutilization time,  and elemental mapping (ii) of as-cast sample
Fig. 2 HV of 2024 alloy and of 2024 alloys with Zn additions solubilized for 3, 5 and 7h,  samples were 50 % hot working before solution treatment and after were 5 and 15% cold
Fig. 3 OM micrographs of 2024 alloy added with 0.5% wt. Zn after solubilized treatment for  3, 5 and in as-cast conditions, 50% hot rolling and 5 and 15% cold rolling
Fig. 4 HRB of 2024 alloy and of 2024 alloys with Zn additions after 5 % cold rolling and  reference sample as a function of aging time, solubilization time: a) 3h, b) 5h and c) 7h
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