SLIDING WEAR OF A RRA TREATED HIGH STRENGTH ALUMINUM ALLOY

Sanjay, Aprameyan S, Santhosh
International Research Journal of Engineering and Technology (IRJET)   unpublished
Age hardenable aluminum alloys belonging to the Al-Zn-Mg family have proved useful as structural materials primarily because of their unique combination of low density, high strength and good corrosion resistance. In the present study an attempt is made to investigate the effect of RRA heat treatment on the wear resistance of AA 7049 high strength aluminum alloy. In the present paper AA 7049 aluminum alloy has been subjected to heat treatment processes of T6 temper, T73 temper and RRA at
more » ... r and RRA at different conditions. A systematic experimentation has been conducted to evaluate hardness and wear characteristics at various heat treated conditions. Based on the result it has been observed that, hardness is higher for the temperature range of 180 0 C to 200 0 C for all the retrogression time durations when compared to T6 temper. When compared to T73 temper hardness is higher for all the retrogression temperatures and time durations except for the temperature of 220 0 C and 240 0 C for more than 20 minutes duration.
fatcat:6d2ltwshrjf6fmq27xfgqj4i2y