Calculation of thermodynamic parameters of Mg-Al-Y alloy
Calculation of thermodynamic parameters of Mg-Al-Y alloy
复制标题
Mg-Al-Y合金热力学参数的计算
DOI:
10.1007/s11595-014-0924-5
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发表时间:
2014-04
影响因子:
1.6
通讯作者:
Yan Hong
中科院分区:
文献类型:
--
作者:
Huang Wenxian;Yan Hong
By means of Miedema formation enthalpy model with Toop model, the excess free-energy, enthalpies of formation, excess entropies and activity values of all components of Mg-Al-Y ternary alloy were calculated with computer programming. The experimental results show that enthalpies of formation, excess free-energy and excess entropies of the ternary alloy are negative in the whole content range, the minimum values at 1 123 K are all obtained atxAl=55%,xY=45%,xMg=0%, which are −37.969, −30.961 kJ/mol and −6.24 J/(mol·k) respectively. Activity curves show that the activity values of Al and Y in Mg-Al-Y ternary alloy rapidly decrease with the decrease of molar fraction, the values of which are very small when the molar fraction decreases to 0.4. It means that there is a strong interaction between Al and Y and stable compounds can be form in the Mg-Al-Y ternary alloy system.
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影响因子:
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影响因子:
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DOI:
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发表时间:
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