ABSTRACT

Aluminium, is being added to liquid steel in a wide concentration range. Wagner's interaction parameter formalism (WIPF) has been successfully used to fit the experimental data reported by several researchers at 1873 K in a low Al content range, however, a huge variation was observed beyond a few wt.% of Al. In the present work, to calculate Al-O equilibria, besides (i) WIPF, (ii) Lupis and Elliot's formalism has been recalculated and (iii) Unified interaction parameter formalism (UIPF) has been developed for the first time on a wt.% scale. Thermodynamic analysis has also been carried out to account for short range order in Fe-Al-O system using (iv) associate model while (v) modified quasi-chemical model (MQM) is summarized from the literature. The present thermodynamic analysis assesses the suitability of various formalisms based on regular and quasichemical model for a wide Al concentration range in liquid steel.

摘要

铝以很宽的浓度范围添加到钢水中。瓦格纳相互作用参数形式 (WIPF) 已成功用于拟合几位研究人员在 1873 K 的低 Al 含量范围内报告的实验数据，但是，观察到超过几个 wt.% 的 Al 时会出现巨大变化。在目前的工作中，为了计算 Al-O 平衡，除了 (i) WIPF，(ii) 重新计算了 Lupis 和 Elliot 的形式主义，以及 (iii) 首次在 wt 上开发了统一相互作用参数形式主义 (UIPF)。 ％ 规模。还进行了热力学分析，以使用 (iv) 关联模型来解释 Fe-Al-O 系统中的短程有序，而 (v) 从文献中总结了改进的准化学模型 (MQM)。