Paper Title
Dry and Wet Wear Behaviour of Cryogenic Treated Magnesium Alloy

Abstract
In this study, an investigation on the effect of cryogenic heat treatment on the wear behavior of AZ91 magnesium alloy in a dry medium and an in wt% 0.9 NaCl was conducted. The wear track, the specific wear rate, and the coefficients of friction, and were investigated under the loads of 1 N, 3 N, and 5N using a tribometer (pin on disc) at a circular motion of 3cm/s covering a distance of 10 m for each sample in both media. Moreover, the statistical analysis was performed on the data. The results from the experiment showed that width of the wear tracks increased as the load increased from 1 N through 5 N; suggesting that the depth increased with load. For the dry media, no positive effect of wear resistance was observed, as the results from all categories suggest similar values. However, the wear resistance favored the treated sample in the wet medium because the rate of corrosion wear was seen to be more prominent on the untreated sample, but as the load increased, the difference between the all values comparing the two samples dropped, and corrosion wear was also seen to be less prominent over the untreated compared to the treated. Keywords - Cryogenictreatment, Wear, AZ91, Biomaterials.