On the Recrystallization of Cold-Rolled Titanium (Report 3). Recrystallization Diagram

Studying the change in hardness, micro-structures and X-ray diffraction patterns due to annealing of cold-rolled titanium under various rates of reduction, the recrystallization-temperature as well as the mean grain-size after recrystallization have been determined and thus a recrystallization-diagram of titanium is proposed as shown in Fig. 2. The effect of the annealing time as well as the initial grain-size on the size of the recrystallized grains has also been studied: Although, with prolonged annealing time, the grain-size becomes generally large, especially, when the temperature is high, the attainable grain-size seems to be almost constant. The initial grain-size showed very little or almost no effect on the grain-size after recrytsallization.