Browsing by Author "Meena, Trapesh"

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Nanowear Mechanisms of Mg Alloyed with Al and Y at Elevated Temperatures
(2020-03-03)
Gokhale, Aditya
;
Meena, Trapesh
;
Lee, Soo Yeol
;
Huang, E-Wen
;
Gosvami, Nitya N.
We examine the role of important alloying elements (Al, Y), on friction and wear mechanisms of Mg as a function of temperature. Friction and wear tests of Mg-5%Al and Mg-5%Y alloys performed at room temperature, 100 degrees C and 150 degrees C reveal that addition of Al and Y significantly reduces the coefficient of friction. However, despite higher hardness of Mg-5%Y alloy, its wear rate was found to be higher than Mg-5%Al alloy at elevated temperatures. We show that this behaviour, observed for Mg-5%Y alloy at elevated temperature, can be attributed to its higher surface energy than Mg-5%Al and pure Mg, leading to enhanced adhesive wear, which is detrimental to tribological applications.