Experimental Investigation of the Phase Relationship of the Fe-Cr-Sn System

• Published in: Journal of phase equilibria and diffusion Vol. 41; no. 3; pp. 234 - 242
• Main Authors: Zhou, Zhihua, Liu, Ya, Wu, Changjun, Peng, Haoping, Wang, Jianhua, Su, Xuping
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.06.2020; Springer Nature B.V
• Subjects: Binary systems; Ceramics; Chromium; Composites; Crystallography and Scattering Methods; Engineering Thermodynamics; Glass; Heat and Mass Transfer; Iron; Metallic Materials; Microscopy; Natural Materials; Optical microscopy; Phase equilibria; Physics; Physics and Astronomy; Solubility; Ternary systems; Thermodynamics; phase equilibrium; isothermal section; solubility; Fe-Cr-Sn
• ISSN: 1547-7037; 1863-7345; 1934-7243
• DOI: 10.1007/s11669-020-00808-2

In this work, 700 and 850 °C isothermal sections of the Fe-Cr-Sn ternary system were experimentally determined by means of optical microscopy, scanning electron microscopy combined with energy dispersive spectrometry, and X-ray diffraction. At 700 °C, the existence of four binary compounds, FeSn, FeSn 2 , Fe 3 Sn 2 , and σ-FeCr were confirmed. Four three-phase regions were identified in the isothermal section of this system at 700 °C, and the maximum solubility of Cr in FeSn and Fe 3 Sn 2 at 700 °C is 10.7 and 15.6 at%, respectively. At 850 °C, the existence of binary compound Fe 5 Sn 3 phase was confirmed, and a three-phase equilibria of Fe 5 Sn 3 , α-(Fe,Cr), and liquid was determined. The maximum solubility of Cr in Fe 5 Sn 3 at 850 °C is 5.8 at%.