Abstract
Abstract The type of deformation twins in purity titanium after dynamic plastic deformation (DPD) and quasi-static compression (QSC) at room temperature is investigated by electron backscatter diffraction techniques, respectively. DPD with a high strain rate (4.5–5 × 10 2 /s) activates more deformation twins in Ti. Four types of twins have been identified in DPD samples, while three types of twins in QSC samples. The { 1 1 2 ¯ 4 } twinning is only observed in DPD samples, associating with the { 1 1 2 ¯ 2 } twinning. The misorientations of { 1 1 2 ¯ 2 }–{ 1 1 2 ¯ 4 } variant pairs are 12–13°, suggesting they follow the same misorientation profile ( 0 1 1 ¯ 0 ) plane and rotated direction.
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