Effects of Yttrium and Lanthanum Elements on the Microstructure and Wear Behaviour of Magnesium

Abstract

This research investigates the impact of yttrium and lanthanum reinforcement on the dry wear, friction, and microstructure of magnesium alloy. The research investigates the effects of the processes such as as-casting and post-homogenization. The alloys MgY3.21La3.15 and MgY4.71La3.98 were created using a process of controlled melting and casting in an atmosphere-controlled environment. The MgY3.21La3.15 alloy, after undergoing homogenization, has a maximum hardness of 93.70 HB from 81.61 HB for the as- cast alloy. The MgY3.21La3.15 alloy exhibits a weight reduction of 0.024 g and a wear rate of 2.44×10–6 g/Nm, which demonstrates exceptional resistance to wear. The MgY4.71La3.98 alloy exhibits a weight loss of 0.053 g and a wear rate of 5.3×10–6 g/Nm. Friction occurs in parallel due to wearing, thus the MgY3.21La3.15 alloy has the lowest friction coefficient with 0.090.