Texture and Mechanical Properties of IF Steel/Polyethylene/IF Steel Laminates

Abstract

It is possible for lamination of metal and plastic plates to add functionality such as damping and thermal insulation while maintaining the specific strength. IF steel/polyethylene/IF steel laminates were fabricated by warm rolling at two rolling reductions in thickness of 40% and 50%, and strength of the laminates and textures of the constituent layers were investigated in detail. From the ODF measurement, when the rolling reduction is high, polyethylene was oriented not only to [100]//RD but also to [001]//ND, resulting in biaxial orientation. Tensile strength of the IF steel layer was about 9 times higher than that of the polyethylene layer, and that of the laminate was almost consistent with the calculated value by the rule of mixture. The IF steel layer with much higher strength showed isotropic tensile strength related to the γ-fiber texture of <111>//ND, although the polyethylene layer showed remarkable in-plane anisotropy resulting from the strong texture. As a result, tensile strength of the laminates was isotropic for both rolling reductions.