Gibbs free energy difference between the undercooled liquid and the phase of a Ti-Cr alloy
نویسندگان
چکیده
The heat of fusion and the specific heats of the solid and liquid have been experimentally determined for a Ti6&r4a alloy. The data are used to evaluate the Gibbs free energy difference, AG, between the liquid and the 0 phase as a function of temperature to verify a reported spontaneous vitrification (SV) of the fi phase in Ti-Cr alloys. The results show that SV of an undistorted fl phase in the Ti&&,, alloy at 873 K is not feasible because AG is positive at the temperature. However, AG may become negative with additional excess free energy to the p phase in the form of defects.
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