Orientation correlations in primary recrystallized Fe-50%Ni

The correlations between orientations of neighboring grains have been investigated in a Fe-50%Ni alloy after primary recrystallization and normal grain growth. Boundary misorientations have been determined by systematic measurement of individual grain orientations by Electron Back-Scattered Diffraction (EBSD). It is shown that the recrystallization process in Fe-50%Ni gives rise to noticeable orientation correlations for Σ3n and low-angle orientation relationships. Such correlations result mainly from the non-random spatial distribution of orientations and from the grain size dependence on orientation developed in these alloys during recrystallization. In the present alloy, the grain growth process leads to minor variations in the orientation correlations associated with low-angle misorientations and reduces considerably those related to Σ3n orientation relationships.