摘要：AbstractZn-based alloys have been studied as new biodegradable metals owing to its slower corrosion rate compared to Mg-based alloys and its high potential for mechanical properties improvement. The present work attempts to improve mainly the mechanical properties of a eutectic Zn-3Mg alloy via equal channels angular pressing (ECAP). Cast Zn-3Mg alloy was homogenized at 370°C for 15h and quenched in water before subjected to 2 steps ECAP process. Results showed that the process decreases the alloy’s grain size from 48µm in the as cast to 1.8µm after 2-passes of ECAP. A remarkably increase of yield strength, tensile strength and elongation was achieved from 65MPa, 84MPa and 1.3% (as cast) to 205MPa, 220MPa and 6.3% (2-ECAP), respectively. Corrosion rate of the alloy was fairly altered from 0.30mm/year (as cast) to 0.24mm/year (2-ECAP). The combination of homogenization and ECAP is therefore viewed as a potential process to improve mechanical properties of Zn-Mg alloys.
