Mixing enthalpy of liquid phase calculated by miedema's scheme and approximated with sub-regular solution model for assessing forming ability of amorphous and glassy alloys
Mixing enthalpy of liquid phase calculated by miedema's scheme and approximated with sub-regular solution model for assessing forming ability of amorphous and glassy alloys
复制标题
DOI：
10.1016/j.intermet.2010.06.003
复制
发表时间：
2010-09-01
期刊：
影响因子：
4.4
通讯作者：
Inoue, A.
中科院分区：
文献类型：
--
作者：
Takeuchi, A.;Inoue, A.
非晶态和非晶态合金的形成能力是由基于Miedea方案的液态混合热(Delta H-Mix)来评估的。计算了一种合金中73个元素的2628个二元系的Delta H-Mix与组成的函数关系，并用次正则溶液模型中的相互作用参数Q来近似，对于组成的三次函数，系数Q(I)(i=0到3)。结果表明，2,627个系统被Q‘s拟合，误差以统计调整后的R-2(R-2)>；=0.999表示，其中2,409个系统的R-2=1。选取了53个元素的1378个系统的Q(I)值，并将其列成表格，用于评价非晶态和玻璃合金的形成能力。分析表明，Fe-P和Fe-C二元合金中的P和C以及La、Zr和Pd基大块金属玻璃中同时添加的Ni和Cu表现出显著的和特殊的Delta H-Mix成分依赖关系。在Miedea方案的框架下，给出了作为合金体系成分函数的最准确的液态H-Mix的值，这使得深入考虑非晶态和玻璃态合金的形成能力成为可能。(C)2010爱思唯尔有限公司。保留所有权利。
The forming ability of amorphous and glassy alloys has been assessed with mixing enthalpy (Delta H-mix) of a liquid phase based on Miedema's scheme. The Delta H-mix's were calculated as a function of composition in an alloy for possible 2628 binary systems from 73 elements, and were approximated with interaction parameter Q in a sub-regular solution model with coefficients Q(i) (i = 0 to 3) for a cubic function of composition. The results revealed that 2627 systems were fitted by Q's within errors denoted by statistical adjusted R-square (R-2) >= 0.999, which includes R-2 = 1 for 2409 systems. The values of Q(i) for 1378 systems from 53 elements were selected and tabulated for assessing the forming ability of amorphous and glassy alloys. The analysis revealed that P and C in Fe-P and Fe-C binary alloys and simultaneous additions of Ni and Cu in La-, Zr- and Pd-based bulk metallic glasses exhibit a marked and peculiar composition dependence of Delta H-mix. In a framework of Miedema's scheme, the most accurate values of Delta H-mix for a liquid phase have been provided as a function of composition in an alloy system, which makes it possible to consider the forming ability of amorphous and glassy alloys deeply. (C) 2010 Elsevier Ltd. All rights reserved.