Influence of aluminum and vanadium alloying elements on the resistivity of titanium

The experimental data on the resistivity of titanium-aluminum and titanium-vanadium alloys in the temperature ranges of 77–1700 and 77–350 K, respectively, at alloying component concentrations below 10 at % are generalized. At these concentrations, the isotherms of the dependences ρ(c) are linear in the temperature range of the α phase (77–500 K) and in the β phase. The numerical values of the concentration angular coefficients (dρ/dc) _T = b were obtained for the Ti-Al and Ti-V systems at temperatures of 77 and 300 K and Ti-Al alloys in the β phase at T = 1400 K. The temperature derivatives (dρ/dT) _T = b _T for the α phase near the Debye temperature and the β phase, where the dependences ρ(T) are close to linear, have been calculated for Ti-Al alloys. In both cases the concentration dependences of the temperature angular coefficients b _T (c) decrease with an increase in the Al concentration; however, their magnitudes differ by an order of magnitude.