Investigation of the Titanium-Molybdenum Binary Phase Diagram

Abstract

The Ti-Mo phase diagram was investigated by optical microscopic observation, electrical resistance measurement, X-ray diffraction and transmission electron micrographic observation.The results obtained are summarized as follows:(1) The miscibility gap exists in the region above 675°C where no gap has been reported previously. The maximum temperature of this miscibility gap is 795°C for Ti-32.5 wt%Mo alloy.(2) The β1\ ightleftarrows(α+β2) monotectoid reaction is found at 675°C and the monotectoid point lies at the composition range from Ti-20 to 22.5 wt%Mo.