Influence of CaO on the Nanohardness Behaviour of AZ63 Magnesium Alloys Produced by Mechanical Alloying Method

摘要: In this study we aimed to produce AZ63 magnesium alloys containing different amounts of CaO, investigate the nanohardness behaviour resulting alloys. These were produced by mechanical alloying under argon atmosphere. Magnesium based with initial CaO content 0.1%, 0.3%, and 0.5% highenergy ball milling, followed process that involved cold pressing sintering. characterized using scanning electron microscopy, probe X-ray diffraction, nanoindentation methods. Unloading segments curves analyzed Oliver-Pharr method. Experimental results show measured exhibits a peak load dependence. As result, in these microstructure depend on CaO.