Ductile-Brittle Behavior of Microcracks in 3D
Results of several parallel molecular dynamics crack simulations in bcc iron crystals with up to 128 million atoms are presented. The crack (001) of Griffith type is loaded in Mode I. We observe dislocation emission and twinning near the free sample surfaces and later plastically induced crack initiation.
V. Pelikán et al., "Ductile-Brittle Behavior of Microcracks in 3D", Materials Science Forum, Vol. 482, pp. 131-134, 2005