Abstrakt
Evolution of electrical resistance of metastable beta titanium alloy Ti-15Mo was measured in-situ during linear heating. It was shown that this method can be successfully used to detect phase transformations in studied alloys.
The trend of electrical resistance changes at 225, 356 and 560 oC, which is connected to omega and alpha phase precipitation and dissolution in beta phase matrix. Different heating rates were used to identify non-diffusional transformations which occur at the same temperature regardless of the heating rate.
Differential scanning calorimetry measurement showed an abrupt change in heat capacity at 550 oC, which is associated with sudden dissolution of the omega phase as shown by scanning and transmission electron microscopy.