Phase equilibria in the Ti–TiMn₂–ZrMn₂–Zr partial system

Chem. Met. Alloys 1 (2008) 67-72.

https://doi.org/10.30970/cma1.0004

V.G. IVANCHENKO, T.V. PRYADKO, I.S. GAVRYLENKO, V.V. POGORELAYA

The phase equilibria in the Ti–TiMn₂–ZrMn₂–Zr region of the Ti–Zr–Mn system have been investigated using DTA, X-ray diffraction analysis, optical microscopy and electron microprobe analysis. The solid phases involved are b (Ti,Zr), (Ti,Zr)Mn₂ continuous solid solutions and r-TiMn. The liquidus and solidus projections, as well as the TiMn₂–ZrMn₂, Ti₅₀Mn₅₀–Zr₅₀Mn₅₀ and Ti₆₀Mn₄₀–Zr_67.5Mn_32.5 vertical sections, have been constructed. The phase diagram is characterized by a minimum on the solid surface caused by the existence of a minimum in the Ti–Zr fusibility diagram, and a U-reaction that involves r-TiMn, TiMn₂ and b-Ti based solid phases and liquid.

Solidus surface of the Ti–TiMn₂–ZrMn₂–Zr partial system.

Keywords

Phase equilibria / Phase diagram / Ti-Zr-based alloys / Crystal structure