Microfracture of polycrystals and the Bishop & Hill stress states (original) (raw)

The paper examines the influence of crystallographic anisotropy on microfracture phenomena in polycrystals, focusing on microcracks in grains embedded within plastic zones larger than the grain size. It discusses how stress states, particularly the Bishop & Hill (B&H) stress states, affect these microcracks under varying conditions. The findings indicate that the behavior of polycrystals, when subjected to stress, leads to a complex interaction between neighboring grains and the development of periodic stress fields, which are critical for understanding brittle and ductile fracture mechanisms as well as fatigue propagation.