Behavior of inclusions with weak adhesion to strip matrix during rolling using FEM

Inclusions inevitably exist in steel strips, whose deformation behavior during rolling severely affects the quality of product. In this paper, the behavior of inclusions in stainless steel strip during cold rolling under various inclusion sizes and positions, and shapes (circle, square, and triangle) were simulated by the finite element method for both hard and soft inclusions when the inclusions were with weak adhesion to the strip matrix. The inclusion shape, the crack position, and size around inclusions after rolling were obtained. When the inclusions are hard, there are cracks around them after rolling. When the inclusions are soft, there are no cracks around them for the circle, square, and triangle inclusions. The calculated results of the relationship between the inclusions and the strip matrix after cold rolling are in good agreement with those of the experimental ones.