Can inherited textures in the B.c.c. phase furnish information about the type of transformation from the F.c.c. phase?

Stretching annealed cylindrical 18/8 Cr Ni steels produces transformed h.c.p. and b.c.c. phases, both showing major textural contributions with increasing stretching of the cylindrical specimens. After stretching, the original f.c.c. phase shows two orientations: [100]_f.c.c.] || cylinder axis and [111] _f.c.c. = || cylinder axis, i.e. direction of stress. In both cases, the martensitic phase is produced by slipping and shear in the f.c.c. → h.c.p. → b.c.c. sequence by Nishiyama–Wasserman (N–W) or Kurdjumov–Sachs (K–S) transformations in the (111)_f.c.c. planes, which enclose angles ≠ 0, 90° with the direction of stress, i.e. the cylinder axis. The orientation distributions of the (110)_b.c.c. reflexion, calculated by means of a very simple model, are compared with the distribution measured by neutron diffraction to obtain information on the bulk material. The special K–S transformation with only six (110)_b.c.c. orientations in the ω scan together with the special N–W transformation with six orientations in the ω scan show relatively good agreement with the measured distribution. Both transformation processes are based on continuous tilting of the newly formed (110)_b.c.c. planes in the direction of the cylinder axis during the deformation process.