An Approach to Viscosity Calculations of Molten Iron and Its Dilute Binary Alloys

I. Okamoto, T. Iida, H. Kihara
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Abstract

At the present time, accurate theoretical values of viscosities are not available. Therefore, in this paper we have proposed an approach to viscosity calculations of molten iron and its dilute binary alloys.Using the expression for pure liquid totals which have been drived by S. Takeuchi and T. lida, the calculated value of viscosity for molten iron at 1600°C is 4.7cP.From the expression and experimental data, we have presented an attempt to calculate viscosities of dilute binary alloys on simple parameters. That is, viscosities of dilute iron based binary alloys are proportional to the square root of the product of atomic weight and melting point, (MTm)1/2, of alloying elements. Viscosities of molten iron due to one atomic percent of various elements at 1600°C are expressed as follows:ηFe⋅dil=ηFe+K[(MT)1/2B-(MTm)1/2Fe]where, K≈3×10-5 (from experimental data)We have obtained same relation for liquid mercury ant its dilute amalgams as well. Consequently, if we obtain experimentally the value K, the approximate values for viscosities of dilute allosy can be calculated.
铁水及其稀二元合金粘度计算方法研究
目前,还没有准确的粘度理论值。因此,本文提出了一种计算铁水及其稀二元合金粘度的方法。利用S. Takeuchi和T. lida驱动的纯液体总量表达式,计算出1600℃时铁水的粘度值为4.7cP。从公式和实验数据出发,提出了用简单参数计算稀二元合金粘度的方法。即稀铁基二元合金的粘度与合金元素的原子量与熔点(MTm)1/2之积的平方根成正比。在1600℃下,不同元素的原子百分数为一的铁水粘度表示为:ηFe⋅dil=ηFe+K[(MT)1/2B-(MTm)1/2Fe],其中K≈3×10-5(从实验数据)我们也得到了液态汞及其稀汞合金的相同关系。因此,如果我们在实验中得到K值,就可以计算稀合金粘度的近似值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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