LAUSR

In this work, Mg 65 Ni 20 Y 15-x Ag x (X= 1, 2, 3, 5) alloys were manufactured by atmosphere controlled induction system. The effect of Ag ratio on the microstructural properties, micro-hardness, density and homogeneity of the Mg-Ni-Y alloys were investigated. These alloys were characterized by X-ray diffraction (XRD), optical microscopy (OM), scanning electron microscopy with energy dispersive X-ray (SEM-EDX) and Vickers microhardness measurement. According to XRD results, Ni 3 Y and Mg 6 Ni phases were observed as well as AgY and Ag 17 Mg 54 phases which were obtained in alloys. The quantitative results of EDX analysis confirm that the chemical composition of the obtained phases is very close and their homogeneities are so high. The average microhardness values of the ingot alloys were measured between 208 and 266 HV for matrix. The elastic modulus and densities of the Mg 65 Ni 20 Y 15-x Ag x (...