Reverse Transformation Behavior of Ti-6Al-4V After Deformation in the Two-Phase Region

Isothermal holding experiments were performed on a Ti-6Al-4V alloy after compression in the two-phase region. The forward transformation took place during compression while the reverse transformation was diffusion controlled when the samples were held after unloading at 940 A degrees C, 970 A degrees C, and 1000 A degrees C. Time-temperature-reverse transformation (TTRT) curves are derived, which indicate that the rate of reverse transformation is independent of temperature when the holding time is 18 seconds. By contrast, it depends on temperature when the holding time is increased to 180 and 1800 seconds. (C) The Minerals, Metals & Materials Society and ASM International 2017