Recrystallization kinetics of cold rolled Gum Metal

Abstract A wire of a β-Titanium alloy known as Gum Metal was cold rolled to reduction 80% and heat treated for times in the range 3-120 minutes at fixed temperature 740 °C yield set partially recrystallized microstructures. The recrystallization course evaluated by light optical microscopy Electron Backscatter Diffraction, based on which kinetics analysed using Johnson-Mehl-Avrami-Kolmogorov (JMAK) model. This analysis showed that this material does not follow traditional JMAK behaviour but has two distinct stages with very different Avrami exponents.