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Experimental Investigation and Thermodynamic Calculation of the Co-Cr-Mo System

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Abstract

The isothermal section of the Co-Cr-Mo system at 1200 K has been investigated experimentally using scanning electron microscopy coupled with energy dispersive x-ray spectroscopy and x-ray diffraction. Six three-phase regions exist in the 1200 K isothermal section. The experimental results indicated that the maximum solubility of Cr in Co-Mo binary compounds Co3Mo and μ at 1200 K is 5.2 and 23.6 at.%, respectively, and that of Mo in Co-Cr binary compound σ is 39.6 at.%. Based on the literature data of the thermodynamic assessment of Co-Mo, Co-Cr, Cr-Mo binary systems and experimental results of the ternary system, the thermodynamic calculation for Co-Cr-Mo system was carried out by means of CALPHAD technique. The computational results and the experimental data are self-consistent reasonably.

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Acknowledgements

This investigation is supported by the National Science Foundation of the China (No. 51071135), the Ph.D. Programs Foundation of Ministry of Education of China (No. 20114301110005) and Scientific Research Fund of Hunan Provincial Educational Department (No. 12A128).

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Authors and Affiliations

  1. School of Mechanical Engineering, Xiangtan University, Xiangtan, 411105, Hunan, People’s Republic of China

    Weilin Wang, Fucheng Yin, Minghua Zhang, Manxiu Zhao & Zhi Li

  2. Key Laboratory of Materials Design and Preparation Technology of Hunan Province, Xiangtan University, Xiangtan, 411105, Hunan, People’s Republic of China

    Weilin Wang, Fucheng Yin, Minghua Zhang, Manxiu Zhao & Zhi Li

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  1. Weilin Wang
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  2. Fucheng Yin
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Correspondence to Fucheng Yin.

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Wang, W., Yin, F., Zhang, M. et al. Experimental Investigation and Thermodynamic Calculation of the Co-Cr-Mo System. J. Phase Equilib. Diffus. 35, 544–554 (2014). https://doi.org/10.1007/s11669-014-0317-7

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  • DOI: https://doi.org/10.1007/s11669-014-0317-7

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