Mg-Ca合金の粒界すべりに及ぼす亜鉛の添加効果

抄録

Progress in the medical technology enables variety implants embedded in the body. Today, magnesium has attracted attention as an implant material having biodegradability. However, the strength of magnesium is lower than that of the conventional material. In order to obtain the sufficient strength, alloying magnesium with Zn and Ca are often conducted e.g., Ti alloys. In this research, we tried to reveal the effect of zinc addition on grain boundary sliding in Mg-Ca alloys. The first-principles calculation and incremental strain rate test was carried out on Mg-Ca alloy and Mg-Ca-Zn alloy. The results demonstrate that zinc addition on Mg-Ca alloy was highly effective in strengthening the grain boundaries.