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Thermophysical Properties of Materials
Influence of Aluminum and Vanadium Alloying Elements on the Resistivity of Titanium
E. A. Bel'skaya,
E. Yu. Kulyamina Scientific Association for High Temperatures, Russian Academy of Sciences, Moscow
Abstract:
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
$\rho(c)$ are linear in the temperature range of the
$\alpha$ phase (
$77$–
$500$ K) and in the
$\beta$ phase. The numerical values of the concentration angular coefficients
$(d\rho/dc)_T=b$ were obtained for the
$\mathrm{Ti}$–
$\mathrm{Al}$ and
$\mathrm{Ti}$–
$\mathrm{V}$ systems at temperatures of
$77$ and
$300$ K and
$\mathrm{Ti}$–
$\mathrm{Al}$ alloys in the
$\beta$ phase at
$T=1400$ K. The temperature derivatives
$(d\rho/dT)_T=b_T$ for the
$\alpha$ phase near the Debye temperature and the
$\beta$ phase, where the dependences
$\rho(T)$ are close to linear, have been calculated for
$\mathrm{Ti}$–
$\mathrm{Al}$ 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.
UDC:
537.3
Received: 08.04.2013
DOI:
10.7868/S0040364414020045
Fulltext:
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