Karel Eloot

Effect of hot rolling parameters on the magnetic properties of a low-silicon ultra-low-carbon steel

Abstract An ultra-low-carbon steel was hot rolled with various reheating, finishing and coiling temperatures. A significant reduction of the core losses after cold rolling and annealing can be obtained by lowering the slab reheating temperature, which results in a coarser precipitate structure and final grain. The magnetic induction can be increased by realising a coarse hot band grain structure.

Relation between magnetic properties and changes in dislocation and cell structure due to cold deformation.

Abstract The deterioration of magnetic properties due to plastic deformation is examined as a function of the degree of cold work in the range of strains 0–0.15. The deformation mode is varied. Laboratory cold rolling without tension is compared with purely tensile deformation. The magnetic properties — measured before and after magnetic aging — are related to microstructural changes.