To evaluate the stability of the ÿ-Mg/C14-Mg2Ca lamellar microstructure, the aging treatment was carried out for the Mg-14.8 massÿCa near-eutectic alloy at
573-723 K for 1-150 h. The spacing of the lamellar structure obtained by the eutectic reaction L ÿ ÿ-Mgÿ