Thermodynamic Studies of the Alpha-to-Beta Phase Transformation in Zirconium Using a Subsecond Pulse Heating Technique.

摘要

Measurements of the temperature and energy of the Alpha-to Beta phase transformation, and the electrical resistivity near and at the transformation point of zirconium using a subsecond duration pulse heating technique are described. The results yield 1147 K for the transformation temperature and 3980 J mol(-1) for the transformation energy. Electrical resistivity is found to decrease by 17 percent during transformation. Estimated inaccuracies of the measured properties are: 10 K for the transformation temperature, 5 percent for the transformation energy, and 2 percent for the electrical resistivity.