{101¯2} twin–twin intersection-induced lattice rotation and dynamic recrystallization in Mg–6Al–3Sn–2Zn alloy

The microstructure and mechanical properties of Mg-Sn-based alloy processed by differential-thermal equal channel angular pressing

“…Figure 5(a)–(c) showed the image quality (IQ) maps of TZK alloys with different deformation conditions, in which the angles of the high-angle grain boundaries (HAGBs) and low-angle grain boundaries (LAGBs) was greater than 15 ° and 2 °∼15 °, respectively. 34,35 Based on the statistical results of the IQ maps, the number of HAGBs in the DT-1, DT-3 and DT-4 was 92.4%, 87.1% and 47.6%, and the number of LAGBs was 7.6%, 12.9% and 52.4%, respectively. The value of kernel average misorientation (KAM) was defined as a misorientation average of the measurement point and the surrounding nearest neighbor point, which could characterise the transformation of the local strain, local lattice distortion, storage energy and geometrically necessary dislocation density during deformation of metal materials.…”

“…The value of kernel average misorientation (KAM) was defined as a misorientation average of the measurement point and the surrounding nearest neighbor point, which could characterise the transformation of the local strain, local lattice distortion, storage energy and geometrically necessary dislocation density during deformation of metal materials. 35 The KAM maps of TZK alloys under different deformation conditions were shown in Figure 5(d)-(f), which could represent the dislocation density of the alloys. The dislocation densities of DT-1, DT-3 and DT-4 increased in turn, which was the same as the change rule for LAGBs.…”