STUDY OF CRACK INITIATION AND PROPAGATION FOR FACE-CENTERED CUBIC POLYCRYSTAL

Abstract

Crack initiation and propagation of fcc polycrystal are studied from the mesoscopic viewpoint. OFHC copper, pure aluminum and SUS 304 stainless steel are taken as examples of material fracture to observe surface under both of monotonic and cyclic loadings. Crack initiation and propagation is simulated based on Asaro's crystal plasticity model by introducing fracture mechanism in finite elements reacting mesoscopic stress or strain at the fracture boundary surface. The obtained results may be regarded as physically plausible, and they are examined and compared with experimental results.