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基于分析有利于合金非晶化的热力学因素,从非晶形成的热力学观点出发,综合应用Miedema理论和Toop模型,并考虑纯金属在不同温度下的自由能,在此基础上提出了一种定量预测三元非晶合金形成范围的方法:通过比较晶态的自由能和相应非晶态的自由能来确定成分范围.用该方法计算Mg-Cu-La三元合金系的非晶形成范围,并与已有的实验数据进行比较,发现二者符合得较好.该方法对于定量预测二元及三元甚至是多元合金系非晶形成范围将有一定的指导意义.
Based on the analysis of the thermodynamic factors conducive to the amorphization of the alloy, the Miedema theory and the Toop model are comprehensively used in view of the thermodynamics of the amorphous formation, and the free energy of the pure metal at different temperatures is considered. Based on this, a quantitative A method of predicting the formation range of ternary amorphous alloys: The compositional range is determined by comparing the free energy of the crystalline state with the corresponding free energy of the amorphous state. The range of amorphous formation of the Mg-Cu-La ternary alloy system is calculated by this method, And compared with the existing experimental data and found that the two are in good agreement.This method will be of guiding significance for the quantitative prediction of the formation range of binary and ternary or even multi-alloy alloys.