GRAIN PROPERTIES AND THEIR EFFECT ON THE FORMING BEHAVIOR WITH PARTICULAR REGARD TO COLD-ROLLED SHEET STEELS

Optimization of formability at similar OT higher strength properies pr esupposes a quantification of the microstructural properties. IF dual- phase and trip steels are the result of corresponding analyses. The pr operties of the steel sheet are decisively affected by its texture. Th is is determined. in turn, by the steel analysis, degree of cold rolli ng and annealing conditions as well as by the hot strip texture. Chara cterization of vertical and planar anisotropy. Grain size as microstru ctural property. Strain-hardening exponent. Microstructure and r-value . Correlations between the characteristic material values.