Thermodynamic study of the alpha beta phase transformation in titanium by a pulse heating method

Abstract

Measure ments of the tempe rature and e ne rgy of the /l' ~ {3 trans formati on. and the electrical resistivity near and at the transformation point of titanium by means of a subsecond durati on pulse he ating tec hnique are desc ribed. The results yield 1166 K for the tra nsformation te mpe rature and 4 170 J. mol-1 for the transfo rmation e ne rgy. El ec lrical resistivit y is fo und to dec rease by about 9 perce nt during the /l' ~ (3 transformation. Estimated inacc urac ies of the measured properti es are: 7 K for the transformati on temperature, 5 pe rcent for the transformati o n ene rgy, and 2 percent for the elec tric al resis tivity.