【摘要】 通过计算机对 Pd 基大块金属玻璃的过冷液相区宽度 ?Tx 的表达式进行回归处理分析,得到 Pd 基大块金属玻璃过冷液相区 ?Tx 与反映合金混合热变化的 3 个键参数(电负性差 ?X、原子尺寸差的百分数 δ 和电子浓度 n )之间存在如下关系:?Tx=–29.369 09+3 602.458 98(?x)2+9 992.767 58 δ2–3.958 97 n2/3,相关系数为 97.2%。?Tx 随多元合金的电负性差和原子尺寸差的百分数的增加而增加,而随电子浓度的增加而略有降低。更多还原

【Abstract】 The regression analysis of the expression of supercooled liquid region ?Tx for Pd-based bulk metallic glass was conducted by computer. It was obtained that the supercooled liquid region of Pd-based bulk metallic glass has close relation with their bond parameters, which can be expressed by the follow equation with a relative coefficient 97.2%: ?Tx=–29.369 09+3 602.458 98(?x)2+9 992.767 58 δ2 –3.958 97n2/3, It can be seen from the equation that the values of ?Tx increase with increasing the electronegativity and atomic size parameter difference of the alloys while they decrease very little with increasing electron density.更多还原