Determination of the liquidus and solidus temperatures of FeCrAl stainless steel

Zhi-biao Han, Jian-hua Liu, Yang He, Kang-wei Li, Yi-long Ji, Jian Liu

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    Zhi-biao Han, Jian-hua Liu, Yang He, Kang-wei Li, Yi-long Ji, and Jian Liu, Determination of the liquidus and solidus temperatures of FeCrAl stainless steel, Int. J. Miner. Metall. Mater., 22(2015), No. 11, pp.1141-1148. https://dx.doi.org/10.1007/s12613-015-1178-8
    Zhi-biao Han, Jian-hua Liu, Yang He, Kang-wei Li, Yi-long Ji, and Jian Liu, Determination of the liquidus and solidus temperatures of FeCrAl stainless steel, Int. J. Miner. Metall. Mater., 22(2015), No. 11, pp.1141-1148. https://dx.doi.org/10.1007/s12613-015-1178-8
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    Determination of the liquidus and solidus temperatures of FeCrAl stainless steel

    • Research Institute of Metallurgy Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    基金项目: 

    This work was financially supported by the National Natural Science Foundation of China (No. 51374023).

    中文摘要

    The liquidus and solidus temperatures of FeCrAl stainless steel were determined by differential scanning calorimetry (DSC) at different heating rates. They were also calculated by Thermo-calc software and empirical formulae separately. The accuracy of calculation results was assessed by comparison with the corresponding DSC results. The liquidus temperatures calculated by empirical formulae, which exhibited a maximum deviation of 8.6℃, were more accurate than those calculated using Thermo-calc, which exhibited a maximum deviation of 12.11℃. On the basis of Thermo-calc calculations performed under the Scheil model, the solidus temperature could be well determined from solid fraction (fS) vs. temperature (t) curves at fS = 0.99. Furthermore, a theoretical analysis to determine the solidus temperature with this method was also provided.

     

    Determination of the liquidus and solidus temperatures of FeCrAl stainless steel

    Author Affilications

      • Research Institute of Metallurgy Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    • Funds: 

      This work was financially supported by the National Natural Science Foundation of China (No. 51374023).

    • Received: 14 January 2015; Revised: 01 June 2015; Accepted: 03 June 2015;
    The liquidus and solidus temperatures of FeCrAl stainless steel were determined by differential scanning calorimetry (DSC) at different heating rates. They were also calculated by Thermo-calc software and empirical formulae separately. The accuracy of calculation results was assessed by comparison with the corresponding DSC results. The liquidus temperatures calculated by empirical formulae, which exhibited a maximum deviation of 8.6℃, were more accurate than those calculated using Thermo-calc, which exhibited a maximum deviation of 12.11℃. On the basis of Thermo-calc calculations performed under the Scheil model, the solidus temperature could be well determined from solid fraction (fS) vs. temperature (t) curves at fS = 0.99. Furthermore, a theoretical analysis to determine the solidus temperature with this method was also provided.

     

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