Three fcc Ni–Co alloys with different stacking fault energies (SFE's) were cold rolled 95% and their textures
were characterized by the orientation distribution function (ODF) method. BCC transformation
textures were calculated from these experimental textures using three different orientation
relationships for the γ→α transformation. The transformed ODF's derived from the Bain
relationship were much sharper than the ones deduced from the Kurdjumov–Sachs (K–S) or the
Nishiyama–Wassermann (N–W) relations. The ferrite texture determined on a controlled rolled steel,
heavily deformed in the unrecrystallized γ region, agrees reasonably well with the bcc texture
calculated using the K–S relation from the rolled Ni–Co alloy with similar SFE. The major texture
components of the ferrite, namely {332}〈113〉 and {311}〈011〉, are found to originate from the two
major rolling texture components of the austenite, i.e. the {110}〈112〉(Bs) and {112}〈111〉(Cu),
respectively. Such ferrite transformation from heavily deformed austenite seems to follow the K–S
relationship without any variant selection. By contrast, the texture of the martensite produced from
deformed austenite appears to involve significant amounts of variant selection.
