The Role of Graphite Nodules in the Deformation Behaviors of Spheroidal Graphite Cast Iron

Abstract

When a ferritic Spheroidal Graphite Cast Iron(SG iron) is submitted to a large tensile load, the graphite nodules in the iron are deformed into oval shape. It has been recognized that a large deformation under tensile stress produces a kind of voids at the graphite edges. However, the breaking process of the graphite nodules has not been clarified yet.