Microstructure evolution of commercial pure titanium is investigated by interrupted in situ electron backscatter diffraction (EBSD) measurement during tensile deformation along transverse direction at room temperature. After 24 pct elongation, the split basal texture of initial material is weakened and rotated around 90 deg along normal direction (ND). \({{11}\bar{2}{{2}}}\)-\({{10}\bar{1}{{2}}}\) double twin is the main reason for the change of texture. The basal poles are rotated nearly perpendicular to ND by the primary \({{11}\bar{2}{{2}}}\) twin and back to ND through the reorientation of \({{10}\bar{1}{{2}}}\) secondary twin. Both Schmid factor criterion and displacement gradient accommodation are considered to predict the twin-induced texture evolution during TD tension. Kink bands formed by the accumulation of basal 〈a〉 dislocations are also observed in the deformed grain. The activation of other slip systems can deviate the rotation axis and reduce the rotation angle of kink boundary. Besides, the kink boundary with high basal dislocation density obviously hinders the twin transmission and simultaneously can be taken as a preferential nucleation site for \({{11}\bar{2}{{2}}}\) twin.

通过在室温下沿横向拉伸变形过程中进行间断原位电子背散射衍射（EBSD）测量，研究了商用纯钛的微观组织演变。在24 pct伸长以后，原始材料的分裂的基础纹理被减弱并且沿法线方向（ND）旋转大约90度。\（{{11} \ bar {2} {{2}}} \） - \（{{10} \ bar {1} {{2}}} \）双胞胎是导致纹理变化的主要原因。基础磁极旋转几乎垂直于ND由主\（{{11} \杆{2} {{2}}} \）双和回ND通过的重新定向\（{{10} \巴{1 } {{2}}} \）次生双胞胎。Schmid因子标准和位移梯度调节均被认为可预测TD拉伸过程中孪生诱导的织构演变。在变形晶粒中也观察到由基<br/>位错的积累形成的扭结带。其他滑移系统的激活会偏离旋转轴并减小扭结边界的旋转角度。此外，高位错位的纽结边界明显阻碍了孪晶的传输，同时可以作为\（{{11} \ bar {2} {{2}}} \}孪晶的优先成核位点。