METALLURGY AND MATERIALS SCIENCE
Jobirov Umed Rustamovich, Ganiev Izatullo Navruzovich, Obidov Ziyodullo Rahmatovich
Annotation:
The hardness and strength of Zn0.5Al alloy and Zn0.5Al-Sc(Y, Er) alloys with different compositions were studied separately, using the alloying components scandium, yttrium, and erbium. All alloys with different compositions exhibited increases and decreases in hardness, with the change being positively and effectively determined compared to the hardness of Zn0.5Al alloy. The behavior of the metallic components of the alloy determines that the influence of scandium and yttrium on increasing the hardness and strength of the base alloy is greater than the influence of erbium on these properties of the alloy. The largest additions (0.5 and 1.0%) of these alloying components showed a slight decrease in hardness and strength compared to the smallest additions (0.01÷0.1%), which means that, taken together, the experimentally established values of these quantities are significantly higher than their values for the Zn0.5Al alloy.
Keywords: Zn0.5Al alloy, doping, scandium, yttrium, erbium, hardness research, Brinell method, strength determination.