Effect of grain misorientation angle on twinning propagation in Ti–15Mo alloy

This study was carried out to evaluate the effect of grain misorientation angle distribution on the deformation behavior and twinning of Ti–15Mo alloy. Cold rolling exhibited a significant texture with grains oriented along the {111}//normal direction, which correlate with a higher fraction of low-angle boundaries. This material showed a lower yield strength and higher elongation than those of the hot rolled material. The twinning propagation mainly occurred between neighboring grains with a low-angle relation. Consequently, the texture development was correlated with low-angle boundaries and affected by the increase in the twinning density, which increased the strain hardening rate.