The symmetry group subgroupsof the austenite lattice and the internal architecture of self–accommodation complexes

The paper deals with the internal architecture of self-accommodation complexes defined operating twinning planes of martensite crystals. It is shown, that the condition for the closed domain complexes leads to the following requirement: the symmetry operators corresponding to several variants of the orientation relationships, related by the twinning operation in pairs, must form a subgroup of the symmetry group of the cubic austenite lattice.