The influence of ultrasound on the structure and properties of the Mg-8.6Zn-1.2Zr biodegradable magnesium alloy during multi-cycle ECAP

Abstract

The effect of multi-cycle combined processing (ЕCAP combined with ultrasonic exposure) on the structure, mechanical, and corrosion properties of the bioresorbable Mg‑8.6Zn‑1.2Zr alloy is examined. It is shown that this deformation processing scheme allows achieving a tensile strength of 305 MPa. There is a tendency for the corrosion rate to decrease with an increase in the number of deformation cycles, and a value of 3.0±0.2 mm/y is achieved. This is attributed to an increase in the proportion of recrystallized grains in the Mg‑8.6Zn‑1.2Zr alloy structure.