The influence of ?-fibre texture on the grain boundary character distribution of an IF-steel

The current study revealed that the development of gamma-fibre texture in IF-steel through static recrystallisation alters the distribution of grain boundary misorientations and plane orientations. In the initial transformed condition, the grain boundary plane distribution has a maximum at the (110) orientation. However, as the intensity of the gamma-fibre texture increased, the maximum shifted to (111) and intensified. Furthermore, the presence of gamma-fibre texture gradually increased the low angle boundary population at the expense of high angle boundaries, leading to a nearly uniform misorientation angle distribution. A calculation of the disorientation distribution assuming random orientations along the gamma-fibre showed a flat distribution in the domain from 0 to 60 degrees, consistent with the observations. The presence of gamma-fibre texture changed the intensity, but not the shape of the grain boundary distribution at n-ary sumation 3 = 60 degrees/[111], which displayed maxima at low energy {112} symmetric tilt boundaries.