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Experimental study of phase transformation in non-equilibrium hypoeutectic alloy from the Fe–Cr–Ni–Mo–C system

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Abstract

In the present study, experimental and thermodynamic analysis of phase transformation in hypoeutectic Fe–24Cr–11Ni–4Mo–0.64C alloy is presented. The investigated alloy was synthesized in an arc furnace in high-purity argon atmosphere using suction-casting unit. Chemical composition of the alloy was determined using an optical emission spectrometer. The microstructure was characterized by scanning electron microscopy. Phase composition in as-cast state was analysed by X-ray diffraction and compared with thermodynamic calculations for equilibrium state using Thermo-Calc software. The analysis of phase transformations was conducted by dilatometry and differential scanning calorimetry investigations. It was found that phase composition of the alloy after non-equilibrium solidification (cooling rate ~30 °C s−1) differs significantly from equilibrium state. Critical temperatures of phase transformations in the alloy were determined.

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Acknowledgements

This work was supported by the AGH UST Grant No. 15.11.110.430.

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Authors and Affiliations

  1. Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Al. A. Mickiewicza 30, 30-059, Kraków, Poland

    K. Wieczerzak, P. Bała, K. Górecki & Ł. Frocisz

  2. Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Al. A. Mickiewicza 30, 30-059, Kraków, Poland

    P. Bała, G. Cios & T. Tokarski

Authors
  1. K. Wieczerzak
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Correspondence to K. Wieczerzak.

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Wieczerzak, K., Bała, P., Cios, G. et al. Experimental study of phase transformation in non-equilibrium hypoeutectic alloy from the Fe–Cr–Ni–Mo–C system. J Therm Anal Calorim 127, 449–455 (2017). https://doi.org/10.1007/s10973-016-5943-3

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