Year: 2000
Type: article
Abstract: Influence of grain orientation anisotropy (texture) on brittle fracture propagation properties in steel was analyzed based on a fracture mechanics model, which assumes that a crack propagates along the cleavage plane with the highest tensile normal stress among the cleavage planes in a grain. The model predicted the higher degree of zigzag crack path with higher intensity of grain texture. The degree of zigzag crack path was also predicted to increase with increasing crack-tip plasticity. This was explained by the fact that plastic crack-tip stress distribution has less potency of driving the crack direction back to the original crack direction than linear elastic crack-tip stress distribution does. Above results agreed well with observations of Charpy impact fracture surfaces of textured and non-textured steel.
Authors: Hitoshi Yoshinari, Shuji Aihara
Institution: The University of Tokyo
Language: English
Subfield: Mechanics of Materials
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2319345688