Effect of temperature and applied load on sliding wear behaviour of AZ91D magnesium alloy

Abstract

The wear characteristics of AZ91D Mg alloy was analyzed at elevated temperature and under different load conditions. Sliding wear tests was conducted for AZ91D Mg alloy against a harden steel disc under various normal load (10 N, 20 N, and 30 N) in a pin-on-disc type wear tester in dry condition at different temperatures (50 °C, 100 °C, 150 °C). The wear value was assessed in terms of height loss as well as weight loss of the pin shaped specimens. In addition, a cumulative wear value against the test time was also recorded through data acquisition arrangement equipped with the wear tester. The results indicated that the AZ91D alloy exhibited a lower wear rate at elevated temperature. However, the wear value increased with the enhancement of normal load applied during the wear test. © 2019 Elsevier Ltd.