Implication of Pre-Aged Three Step T6 Treatment on the Properties of Granite and Silicon Nitride Particulates Reinforced Al7075 Matrix Composite

In the current research Al7075 (Al-5.4Zn-2.6Mg) alloy and composite prepared by dispersing 2 wt.% granite powder 3 Si3N4 in are subjected to peak aging treatment at 100, 120 1500C obtain maximum induced hardness solid solution strengthening. succession, results of pre aged heat treated three step conditions. The indicated that has resulted enhanced 185.6 VHN as compared 142.9 1000C resulting 29.88% improvement. Moreover, pre-aged improved 197.6 153.5 28.72% Also, this condition showed an improvement 21.38% 16.34% respectively UTS. particularly displayed excellent wear characteristics cast alloy. An interesting fact noticed work is last having higher temperature longer duration always a better hence mechanical properties. This may be due increased kinetics during treatment. novel approach developed study will reduce conventional energy consumption.