Publications

Abstract : Al-6Zn-4Mg alloy blocks were prepared by stir casting process. The wear study was conducted by varying load, velocity and specimen temperature using pin-on-disc wear tester. It was observed that the wear rate (WR) increases with load at a constant velocity. The WR at constant load is less in the velocity range of 1.5 to 2 m/s. compared to the velocity range of 1 to 1.5 m/s. The specific wear rate (SWR) decreases rapidly between 10 to 20 N and marginally from 20 and 50 N. The SWR increases linearly with sliding velocity. The decrease in wear resistance is significant between 10 and 20 N and is marginal from 20 to 50 N. The wear resistance decreases linearly with increasing velocity. The WR decreases rapidly as the temperature of the specimen increases from 50 to 90ºC and further increase of specimen temperature from 90 to 125ºC, increases WR rapidly. The SWR also varied similar to WR versus temperature. The wear resistance of the specimen shows a reverse trend as compared with the WR and SWR. The variation of coefficient of friction (COF) with load, velocity and specimen temperature shows a marginal variation. © Research India Publications.