Abstract:
The influence of the individual equiaxed and columnar cast structure on the evolution
of texture during thermo-mechanical processes (TMP) was investigated using the electron
backscatter diffraction (EBSD) technique. The recrystallization texture after cold working and
annealing was then related to mechanical properties of the initial cast structures. It was found
that the initial equiaxed cast structure exhibited a homogenous γ −fiber texture while the
columnar developed an inhomogeneous texture with the predominance of both the Goss and
α −fiber textures. While texture has a significant influence on surface smoothness of the drawn
product, it was found that it did not significantly affect the yield strength and ultimate tensile
strength (UTS), but marginally affected the elongation i.e. it was found to be slighted higher for
the equiaxed than the columnar cast structure measured parallel to the rolling direction (RD).
