Rotations involved in tensile deformation and recrystallization in Fe-11Cr-19Ni alloy single crystal

An Fe-11Cr-19Ni alloy single crystal having an initial orientation close to [011]{511} was deformed in tension. The uniformly deformed portion (i.e. m atrix) of the crystal was rotated about a [110] axis in the counterclockwis e direction as tensile deformation proceeded. The rotation suggests that no t only the slip systems on the primary slip plane but also those on the cri tical slip plane were involved in the deformation. After annealing, the mat rix almost completely recrystallized. Orientation relationships were found between the deformed matrix and the recrystallized grains. The majority of the recrystallized grains was related to the matrix orientation by rotation about (Ill)axes. Among such recrystallized grains, those rotated about the conjugate-slip plane normal and those rotated about the cross-slip plane n ormal outnumbered the others. The rotation occurred in the clockwise direct ion, opposite to the deformation-induced rotation of the matrix.