Abstract
The temperature, duration, activation energy, and Avrami exponent of the solid phase transformation β1 → α + β2 of TC4 titanium alloy treated at 3 GPa in a cooling process are calculated by means of differential scanning calorimetric curves. Then the effects of high pressure on the β1 → α + β2 phase transformation dynamics of TC4 alloy in a cooling process are investigated. The results show that 3 GPa high pressure treatment can increase the activation energy of the TC4 alloy. The beginning time, end time, and duration of the β1 → α + β2 phase transition of the 3 GPa high pressure treated TC4 alloy at the cooling rate of 10°C/min are increased by 2.90°C, 7.78°C and −29.28 s respectively. It is known that 3 GPa high pressure treatment has little effect on the phase transition mechanism.
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