根据Miedema电荷迁移理论,引入固溶体中原子尺寸和间距随溶质浓度改变的观念,修正了Moreen的固溶体品格常数预测模型.用本修正方法可以更准确地预测平衡固溶体和溶体淬火制备的扩展固溶体的品格常数,计算了Cu-Al,Cu-Si,Ni-Al平衡固溶体和Ag-Sn,Ag-La,Ag-Gd系扩展固溶体的晶格常数,本修正方法计算值比Moreen模型计算值与试验值相符更好. According to the theory of Miedema charge transfer, introducing the concept that the atomic size and spacing in solid solution change with the concentration of solute, we modify the prediction model of moreen solid solution lattice constants, which can predict more accurately the character of the solid solution and the solid solution prepared by solution quenching The lattice constants of Cu-Al, Cu-Si, Ni-Al and Ag-Sn, Ag-La and Ag-Gd systems were calculated. The calculation results of this revised method are better than those calculated by Moreen model and the experimental values Match better.