TY - CONF
T1 - A novel micro-mechanical model for polycrystalline inter-granular and trans-granular fracture
AU - Gulizzi, Vincenzo
AU - Benedetti, Ivano
AU - Rycroft, Chris H.
AU - Gulizzi, Vincenzo
PY - 2017
Y1 - 2017
N2 - In this work, a novel grain boundary formulation for inter- and trans-granular cracking of polycrystalline materials is presented. The formulation is based on the use of boundary integral equations for anisotropic solids and has the advantage of expressing the considered problem in terms of grain boundary variables only. Inter-granular cracking occurs at the grain boundaries whereas trans-granular cracking is assumed to take place along specific cleavage planes, whose orientation depends on the crystallographic orientation of the grains. The evolution of inter- and trans-granular cracks is then governed by suitably defined cohesive laws, whose parameters characterize the behavior of the two fracture mechanisms. The results show that the model is able to capture the competition between inter- and trans-granular cracking.
AB - In this work, a novel grain boundary formulation for inter- and trans-granular cracking of polycrystalline materials is presented. The formulation is based on the use of boundary integral equations for anisotropic solids and has the advantage of expressing the considered problem in terms of grain boundary variables only. Inter-granular cracking occurs at the grain boundaries whereas trans-granular cracking is assumed to take place along specific cleavage planes, whose orientation depends on the crystallographic orientation of the grains. The evolution of inter- and trans-granular cracks is then governed by suitably defined cohesive laws, whose parameters characterize the behavior of the two fracture mechanisms. The results show that the model is able to capture the competition between inter- and trans-granular cracking.
KW - Boundary element method
KW - Inter-granular cracking
KW - Materials Science (all)
KW - Mechanical Engineering
KW - Mechanics of Materials
KW - Micromechanics
KW - Polycrystalline materials
KW - Trans-granular cracking
KW - Boundary element method
KW - Inter-granular cracking
KW - Materials Science (all)
KW - Mechanical Engineering
KW - Mechanics of Materials
KW - Micromechanics
KW - Polycrystalline materials
KW - Trans-granular cracking
UR - http://hdl.handle.net/10447/246482
UR - http://www.scientific.net/
M3 - Other
SP - 177
EP - 180
ER -