Thermodynamics of the Oxygen Solutions in Titanium-Containing Fe-Co-Cr Melts

被引：0
|
作者：
Aleksandrov, A. A. [1 ]
Dashevskii, V. Ya. [1 ]
机构：
[1] Russian Acad Sci, Baikov Inst Met & Mat Sci, Moscow 119334, Russia
来源：
RUSSIAN METALLURGY | 2019年 / 2019卷 / 05期
关键词：
Fe-Co-Cr system; titanium; melts; oxygen; solubility; LIQUID; DEFORMATION; ALLOYS;
D O I：
10.1134/S0036029519050021
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A thermodynamic analysis of the influence of titanium on the oxygen solubility in Fe-Co-Cr melts at 1873 K is performed. The dependences of the oxygen solubility in Fe-Co-Cr melts on the titanium content are calculated. The titanium content at which the deoxidation reaction mechanism is changed (Cr2O3 Ti3O5) is as follows: 2.602 x 10(-3)% Ti for the Fe-10% Co-10% Cr alloy and 2.975 x 10(-3)% Ti for the Fe-20% Co-25% Cr alloy. A low titanium content insignificantly increases the oxygen concentration determined by the chromium content. At a higher titanium content (after the change of the mechanism of interaction of chromium and titanium with oxygen, when titanium determines the oxygen solubility in the melts), the oxygen concentration substantially decreases and, then, increases after passing a minimum point at a titanium content of 0.9%. The minimum oxygen concentrations of these alloys are 1.8 x 10(-3) and 3.9 x 10(-3)%, respectively.
引用
收藏
页码：531 / 535
页数：5
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