The crystal plasticity finite element method (CPFEM) is used to investigate the coupling between cylindrical void growth or collapse and grain refinement in face-centered cubic (FCC) single crystals. A 2D plane strain model with one used. effect of initial lattice orientation, similarities, differences stress- strain-driven loading scenarios are explored. To this end, boundary conditions enforc...

nano-sized batio3 powders with particular nb concentrations were prepared by rotary- hydrothermal (rh) method. hydrothermal method was used at 180 °c for 5 hours with new ti pressure and the teflon vessel was rotated at a speed of 160 rpm during the hydrothermal reaction. new hydrothermal method was used instead of previous solid state reaction for the system batio3±nb2o3 in high temperature to...

Polycrystalline microstructure often plays an important role in determining the macroscopic behavior of metals. This work is motivated by the case of a spin-formed shaped charge liner. When these liners are compressed and inverted by detonation of an explosive charge, the resulting jet of material exhibits a distinct rotation. There is no asymmetry at the macroscopic level that would suggest a ...

An overview of micromechanical models of strength and deformation behaviour of nanostructured and ultrafine grained metallic materials is presented. Composite models of nanomaterials, polycrystal plasticity based models, grain boundary sliding, the effect of nonequilibrium grain boundaries and nanoscale properties are discussed and compared. The examples of incorporation of peculiar nanocrystal...