Figure 1: BCC metals plasticity and crystallography.
From: Plastic anisotropy and dislocation trajectory in BCC metals
(a) Schematic representation of the (1
0) glide plane and maximum RSS plane (MRSSP) during a tensile test. (b) Projection of the BCC lattice in the (111) plane showing the high-symmetry dislocation positions (E, easy core; H, hard core; S, split core). The angle χ between the (1
0) plane and the maximum RSS plane is positive in the AT region (red area) and negative in the T region (green area). (c) Example of dislocation trajectory (green line) calculated with DFT in Mo and definition of the deviation angle α. The green diamond shows the saddle point position. (d) Energy profile along the hard-split line (H-S segment in b,c) calculated with DFT in Mo.
