INVESTIGATION OF MECHANICAL PROPERTIES OF ZN-FE-MG ALLOY AFTER HIGH PRESSURE TORSION

Abstract

Biomaterials for medicine at the moment attract a huge attention of the scientific community all overthe world. Of particular interest are biodegradable materials that with potential application in theform of implants, namely bone plates and vascular stents, since they can completely dissolve withina certain time, which disappears, excluding the necessity of the repeated surgery. In the present work,a study was made of the high-pressure torsion (HPT) of the mechanical properties of a zinc alloyof the Zn-Fe-Mg system. Studies show that severe plastic deformation (SPD) leads to a significantincrease in mechanical properties, namely, the value of yield strength, tensile strength grows by 41%and 31%, respectively, compared with size, homogenization annealing and hardening. Increase instrength is accompanied by plasticity growth (relative stretch increased to 17%). At the same time,solid particles of FeZn13 do not change shape during plastic deformation. The research results allowto conclude that plastic deformation is a promising way for improving mechanical properties of theof the Zn-Fe-Mg zinc alloy system.