Nanowear Mechanisms of Mg Alloyed with Al and Y at Elevated Temperatures

Aditya Gokhale, Trapesh Meena, Soo Yeol Lee, E. Wen Huang, Nitya N. Gosvami, Sujeet K. Sinha, Jayant Jain*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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 °C and 150 °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.

Original languageEnglish
Article number46
JournalTribology Letters
Issue number1
StatePublished - 3 Mar 2020


  • Adhesion
  • Elevated temperature
  • Mg alloy
  • Scratch
  • Wear

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