The Effect of Plastic Deformation on the Precipitation Hardening Behavior of Biodegradable Mg-Sr-Ca-Zn Based Alloys

摘要

In this study, the precipitation hardening behaviour of Mg-Sr-Ca-Zn based alloy system with trace additions was investigated. The as-cast microstructure was found to be composed of Mg_2(Ca, Sr) interdendritic phases surrounding the α-Mg matrix. The effect of temperature as well as initial plastic deformation on the precipitation hardening behaviour was analyzed via ageing treatments. More effective age-hardening response was achieved via ageing at 150 °C both in as-cast and deformed samples. Prior plastic deformation resulted in changes in precipitation kinetics.