2002 年 42 巻 8 号 p. 903-909
Microstructure and crystal orientation distribution in hot-compressed Fe-40at%Al alloy were investigated using an electron back-scatter diffraction pattern technique. After the hot deformation, grain boundaries became more serrated with increasing tested temperature or decreasing strain rate, i.e., decreasing the Zener-Hollomon parameter (Z). Equiaxed fine grains surrounded by high angle boundaries were homogeneously formed due to dynamic recrystallization accompanied by serrated grain boundaries during hot deformation at lower Z. Moreover, strong ‹111› fiber texture parallel to the compressive axis developed at larger strains because of the lattice rotation during hot deformation, which was good agreement with the stable orientation calculated by Taylor model. The microstructural factors which established the mechanism of texture evolution during dynamic recrystallization were examined focusing on the Z parameter.
