| Summary: | The influence of height reduction on the microstructure evolution and mechanical properties of the Ti<sub>2</sub>AlNb-based alloy was investigated during canning compression and subsequent annealing. After the annealing treatment, the spheroidized B<sub>2</sub> phase grains occurred because of partial recrystallization. Meanwhile, the texture evolution of the B<sub>2</sub> phase and O phase were analyzed under the deformation degree, ranging from 25% to 75%. The results show that the mechanical properties of the post-annealed alloys were co-affected by the grain size and Schmid factor of the B<sub>2</sub> phase. When the height reduction was less than 25%, the compression strength was mainly affected by the grain size. When the height reduction was higher than 50%, it was mainly dominated by the Schmid factor. When the deformation degree reached 75%, the recrystallized grain size decreased to 0.9 μm. Meanwhile, the Schmid factor of a {110}<001> slip system in B<sub>2</sub> phase reduced to 0.34. Therefore, the yield strength of the Ti<sub>2</sub>AlNb alloy at room temperature increased from 892 MPa in the as-rolled condition to 935 MPa after the canning compression and annealing.
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