The temperature dependence of the critical deformation required for the initiation of dislocation reorientation bands in commercial-purity α-phase polycrystals was deduced via the statistical processing of transmission electron microscopic images. The specific volume which was occupied by reorientation bands depended upon the strain and temperature (4.2 to 393K). The observed effects were attributed to a decrease in the relative mobility of screw dislocations (as compared with edge dislocations) which occurred upon lowering the temperature, to the thermally activated nature of dislocation rearrangement during the process of reorientation bands formation, and to the characteristics of the temperature dependence of the critical shear stresses for slip and twinning.

Temperature Effect on Formation of Reorientation Bands in α-Ti V.A.Moskalenko, A.R.Smirnov: Materials Science and Engineering A, 1998, 246, 282-8