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Ni-Co-Cr基合金中预测δ相的计算法
引用本文:倪克铨,陈国良,朱平.Ni-Co-Cr基合金中预测δ相的计算法[J].北京科技大学学报,1991(4).
作者姓名:倪克铨  陈国良  朱平
作者单位:北京科技大学材料科学与工程系 (倪克铨,陈国良),深圳晋园不锈钢公司(朱平)
摘    要:选择幂级数模型描述了过剩自由能项,并从二、三元实测相图上用数据优化程序获得了所需热力学参数和交互作用系数,进而用多元相平衡计算法成功地预测了镍、钴,铬基合金中σ相的析出。

关 键 词:σ相  热力学  相图

Thermodynamic Equilibrium Calculation Method for Prediction of Sigma Phase in Commercial Ni-Co-Cr Base Superalloys
Ni Kequan Chen Guoliang Zhu Ping.Thermodynamic Equilibrium Calculation Method for Prediction of Sigma Phase in Commercial Ni-Co-Cr Base Superalloys[J].Journal of University of Science and Technology Beijing,1991(4).
Authors:Ni Kequan Chen Guoliang Zhu Ping
Institution:Department of Materials Sicence and Engineering
Abstract:This paper try to predict the formation of o phase on the basis of thermodynamic equilibrium calculation. A power series model was chosed to express the excess free energy of multi-component non-ideal phase. All data including the interaction coefficient in binary and ternary alloy system were obtained by phase diagram fitting method. New method has the ability to predict phase formation correctly and enough precisely for all Ni-Co-Cr base sup-eralloys.
Keywords:
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