1987 Volume 27 Issue 6 Pages 520-525
The effect of the inhomogeneous shear strain through the thickness of rolled sheet on the recrystallization behavior and texture formation has been investigated. Type AISI 304 stainless steel sheets were rolled to various reductions at temperatures ranging from 800-1100°C at a rolling speed ranging from 15-37m/s without lubrication. The rolled specimen was quenched at an interval of 3.5-250ms after rolling.
The redundant strain by friction produces a severely sheared region beneath the surface. A band of extremely fine grains is formed by dynamic or metadynamic recrystallization above a critical reduction which is dependent on rolling temperature.
The deformation texture consists mainly of {001}<110>, {111}<110> and {112}<110> in the severely sheared region, and mainly {110}<112> in the midthickness. The recrystallization texture in severely sheared region retains the deformation texture except for the {001}<110> component, and is unchanged in the subsequent annealing. Static recrystallization occurs in the region other than severely sheared region by holding or subsequent annealing after rolling. The texture randomizes with progress of the static recrystallization.
