Experimental Investigation and Thermodynamic Calculations of the Co-Fe-Ti System

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• 作者：Yafei Pan ; Chong Chen ; Yong Du ; Chaohui Yuan…
• 关键词：Co ; Fe ; Ti system ; phase equilibria ; thermal analysis ; thermodynamic calculations
• 刊名：Journal of Phase Equilibria and Diffusion
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：38
• 期：1
• 页码：5-16
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Crystallography and Scattering Methods; Thermodynamics; Engineering Thermodynamics, Heat and Mass Transfer; Ceramics, Glass, Composites, Natural Materials; Metallic Materials;
• 出版者：Springer US
• ISSN：1863-7345
• 卷排序：38

文摘

A thermodynamic description of the entire ternary Co-Fe-Ti system is obtained by means of CALPHAD modeling. Key experiments are performed in order to complement literature data on phase equilibria mainly reported in the temperature interval from 873 to 1223 K. As-cast and annealed samples are investigated by means of x-ray diffraction measurement, electron probe microanalyses and differential scanning calorimetry in order to determine primary phase regions, invariant reactions and vertical sections. Comprehensive comparisons between the calculated and measured phase diagram data show that the experimental information is satisfactorily accounted for by the present thermodynamic description. The liquidus projection and reaction scheme of the Co-Fe-Ti ternary system are also generated by using the present thermodynamic parameters.