Establishment of a general formula for fractional softening

Abstract

passed, homogeneous deformation proceeds from this starting structure and produces a particular Aew variation with strain. Prior temper rolling introduces many closely spaced Luders fronts, and both the activated slip systems and the resulting dislocation substructure are different from those obtained during tensile straining. The greater the amount of temper reduction, the larger will be the volume fraction of the steel sheet which has been deformed under temper rolling conditions rather than tensile conditions. Two slightly different types of dislocation substructure may be developed during subsequent tensile deformation: one in the areas deformed during temper rolling and one in the undeformed areas. Gradual changes in the relative volumes of these different substructures occur with increasing temper reduction and cause the gradual changes in the plot of Aew vs strain observed during this study.