Experimental investigation and thermodynamic calculation of the Fe–Si–Sn system

• Published in: Calphad Vol. 57; pp. 88 - 97
• Main Authors: Wang, Xinming, Zhou, Bin, Guo, Zhiqiu, Liu, Ya, Wang, Jianhua, Su, Xuping
• Format: Journal Article
• Language: English
• Published: Elmsford Elsevier Ltd 01.06.2017; Elsevier BV
• Subjects: Alloy systems; Alloys; Balancing; Binary systems; CALPHAD; Diffraction; Energy dispersive X ray spectroscopy; Extrapolation; Fe–Si–Sn; Immiscible alloys; Isothermal section; Mathematical analysis; Phase equilibria; Phases; Scanning electron microscopy; Solidification; Solubility; Spectrometry; Ternary systems; CALPHAD; Fe–Si–Sn; Isothermal section; Immiscible alloys
• ISSN: 0364-5916; 1873-2984
• DOI: 10.1016/j.calphad.2017.03.006

Phase equilibrium of the Fe–Si–Sn ternary system was investigated using equilibrated alloys. The samples were characterized by means of scanning electron microscopy equipped with energy dispersive X–ray spectrometry and X–ray diffraction. Isothermal sections of the Fe–Si–Sn system at 700°C and 890°C each consists of 5 three–phase regions. No ternary compound was found at those two temperatures. The solubility of Sn in the Fe–Si binary phases and the solubility of Si in the Fe–Sn binary phases is limited. Furthermore, thermodynamic extrapolation of the Fe–Si–Sn system was carried out. Calculated solidification path and phase relationship agreed well with experimental results. •The isothermal sections at 700 and 890 °C of the Fe–Si–Sn system were determined.•Solubility of Sn in the Fe–Si binary phases and that of Si in the Fe-Sn binary phases is limited.•Thermodynamic extrapolation of the Fe–Si–Sn system was carried out.•Calculated solidification path and phase relationship convinced well with experimental results.