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Numerical analysis on Si deoxidation of molten Fe-Ni and Ni-Co alloys by quadratic formalism

机译:二次形式主义对熔融Fe-Ni和Ni-Co合金Si脱氧的数值分析

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Relation between the activity coefficient expressed by Darken's quadratic formalism and the excess Gibbs energy change of mixing described with Redlich-Kister type polynomial was discussed on Si deoxidation of Fe-Ni and Ni-Co alloys. The activity coefficients of Si and O in metal expressed by quadratic formalism have been converted into formula using interaction parameters Omega(i-j) under the condition where concentration of Si and O are dilute.Numerical analysis on Si deoxidation of molten Fe-Ni and Ni-Co alloy has been carried out. It has been found to be outstanding in the agreement of equilibrium Si and O contents in molten Fe-Ni and Ni-Co alloy analyzed in the present work with the experimental results. The deoxidation equilibrium of not only one component metal but also alloy can be analyzed numerically using the formula determined in the present work.
机译:关于Fe-Ni和Ni-Co合金的Si脱氧,讨论了由Darken二次方表示的活度系数与用Redlich-Kister型多项式描述的混合的过量吉布斯能量变化之间的关系。在稀铁和稀硅的条件下,利用相互作用参数Omega(ij),将由二次式表示的金属中硅和氧的活度系数转换为公式。熔融Fe-Ni和Ni-的Si脱氧的数值分析进行了钴合金。已经发现,在本工作中分析的熔融Fe-Ni和Ni-Co合金中Si和O的平衡Si和O含量与实验结果相吻合方面是杰出的。不仅可以使用本研究确定的公式对一种成分金属而且还可以对合金的脱氧平衡进行数值分析。

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