Abstract
This paper deals with an aluminum-clad stainless steel sheet produced by hot rolling. Basic press-forming tests, which include punch stretching and deep-drawing, were conducted. The characteristics of the joining process within the range of uniform elongation shows that the aluminum portion has higher ductility than that of stainless steel. However, the latter has higher local deformation and a larger Lankford, r, owing to the inherent characteristic of the material. The formability in both stretching and deep-drawing, are higher when the aluminum is set on the outer side of the cup. Factors related to the deformation of the clad sheet, such as wrinkling and cup height are controlled by the material with the higher strength, stainless steel. The fracture and deformation mechanisms are clarified by the detailed measurements of thickness strain.
