On the formation of ternary phases in the Ti–Fe–Sn ternary system at 773 K

Chem. Met. Alloys 6 (2013) 12-19

https://doi.org/10.30970/cma6.0232

L. ROMAKA, V.V. ROMAKA, Yu. STADNYK, N. MELNYCHENKO

The phase equilibria of the Ti–Fe–Sn ternary system were studied at 773 K in the whole concentration range using X-ray diffraction and metallographic analyses. The Ti–Fe–Sn ternary system at 773 K is characterized by the formation of three ternary intermetallic compounds: TiFe₂Sn (MnCu₂Al-type), Ti₅FeSn₃ (Hf₅CuSn₃-type), and Ti_0.4Fe_0.6Sn₂ (Mg₂Ni-type). The existence of substitutional solid solutions TiFe_2-xSn_x (up to 5 at.% Sn) and Ti_6-хFe_xSn₅ (up to 5 at.% Fe) was observed. The limiting composition of the Ti₅Fe_xSn₃ solid solution (x = 1.0) is considered as a distinct compound with Hf₅CuSn₃ structure type.

Isothermal section of the Ti–Fe–Sn phase diagram at 773 K

Keywords

Stannides / Phase diagram / Solid solution / EPMA / Electronic structure