Mekanik alaşımlama ile üretilen nanokristal Mg50Cu50 tozları.

In the present study, binary mixture of Mg and Cu with nominal composition of nanocrystalline Mg50Cu50 powder alloy was synthesized by mechanical alloying. The effect of mechanical alloying time on the phase evolution and microhardness of the powder alloy was investigated by X-Ray diffractometry (XRD), scanning electron microscopy (SEM) and Vickers microhardness (HV) tester. The micro hardness value of the alloy increased with increasing mechanical alloying time and it was measured ~600 Mpa for final product. The crystallite size of Mg50Cu50 alloy calculated with broadening of XRD peaks by Debye Scherrer equation. The crystallite size of the powder alloy was also confirmed by transmission electron microscopy (TEM) and it was determined approximately 10 nm. Thermal properties of the mechanically alloyed Mg50Cu50 powders were examined by differential scanning calorimetry (DSC). From DSC traces, an endothermic peak which belongs to melting point of Magnesium (Mg) element was observed at ~ 650 ˚C [ABSTRACT FROM AUTHOR]