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Volume 26 Issue 11
Nov.  2019
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文章导航 >  矿物冶金与材料学报（英文）  > 2019  >  26(11): 1427-1435
Jiang-tao Gao, Chang-rong Li, Cui-ping Guo,  and Zhen-min Du, Investigation of the stable and the metastable liquidus miscibility gaps in Fe-Sn and Fe-Cu binary systems, Int. J. Miner. Metall. Mater., 26(2019), No. 11, pp. 1427-1435. https://doi.org/10.1007/s12613-019-1798-5
Cite this article as:
Jiang-tao Gao, Chang-rong Li, Cui-ping Guo,  and Zhen-min Du, Investigation of the stable and the metastable liquidus miscibility gaps in Fe-Sn and Fe-Cu binary systems, Int. J. Miner. Metall. Mater., 26(2019), No. 11, pp. 1427-1435. https://doi.org/10.1007/s12613-019-1798-5
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研究论文

Investigation of the stable and the metastable liquidus miscibility gaps in Fe-Sn and Fe-Cu binary systems

  • School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

  • 通讯作者:

    Chang-rong Li    E-mail: crli@mater.ustb.edu.cn

  • Two kinds of experimental methods were tried in the present work:(i) the powder metallurgy method combined with differential thermal analysis (DTA) to determine the metastable liquidus miscibility gap for a Fe-Cu binary system and (ii) the high-temperature melting method combined with isothermal treatment to determine the stable liquidus miscibility gap for a Fe-Sn binary system. The experimental method was adopted according to the characteristics of the liquidus miscibility gap of the specific system. Using the powder metallurgy method, a uniform microstructure morphology and chemical composition was obtained in the DTA specimen, and the phase-separation temperature of the supercooled metastable liquid was measured. The isothermal treatment was applied for the samples inside the stable liquidus miscibility gap; here, equilibrated compositions were reached, and a layered morphology was formed after rapid cooling. The liquid miscibility gaps of the Fe-Cu and Fe-Sn binary systems were measured, and the peak temperatures of the corresponding miscibility gaps were determined to be about 1417℃ at x(Cu)=0.465at% and 1350℃ at x(Sn)=0.487at%, respectively. On the basis of the experimental results, both the Fe-Cu and the Fe-Sn binary systems were thermodynamically assessed.
    • Research Article

    Investigation of the stable and the metastable liquidus miscibility gaps in Fe-Sn and Fe-Cu binary systems

    + Author Affiliations
      Abstract
    • Two kinds of experimental methods were tried in the present work:(i) the powder metallurgy method combined with differential thermal analysis (DTA) to determine the metastable liquidus miscibility gap for a Fe-Cu binary system and (ii) the high-temperature melting method combined with isothermal treatment to determine the stable liquidus miscibility gap for a Fe-Sn binary system. The experimental method was adopted according to the characteristics of the liquidus miscibility gap of the specific system. Using the powder metallurgy method, a uniform microstructure morphology and chemical composition was obtained in the DTA specimen, and the phase-separation temperature of the supercooled metastable liquid was measured. The isothermal treatment was applied for the samples inside the stable liquidus miscibility gap; here, equilibrated compositions were reached, and a layered morphology was formed after rapid cooling. The liquid miscibility gaps of the Fe-Cu and Fe-Sn binary systems were measured, and the peak temperatures of the corresponding miscibility gaps were determined to be about 1417℃ at x(Cu)=0.465at% and 1350℃ at x(Sn)=0.487at%, respectively. On the basis of the experimental results, both the Fe-Cu and the Fe-Sn binary systems were thermodynamically assessed.
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      • References(23)
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