Effect of coil cooling conditions on microstructural and mechanical properties uniformity of flat hot rolled AHSS

Experimental and computational results of measurement of the temperature field due to cooling of coils of hot-rolled strip from low-carbon high-strength steel are presented. It is shown that in a conventional production process the coils cool nonuniformly. The nonuniformity of the cooling causes inhomogeneity of the properties both over the length of the strip and over its width.