Special interaction between quasiperiodic grain boundaries and lattice dislocations in crystalline solids

PACS. 62.20.Fe Deformation and plasticity (including yield, ductility, and superplasticity) - 68.35.Ct Interface structure and roughness - 68.35.Dv Composition; defects and impurities,

Enhanced ductility of nanocrystalline and ultrafine-grained metals

This article briefly summarizes the extensive information now available, from recent experiments and theoretical models, addressing the enhanced tensile ductility of nanocrystalline (NC) and ultrafine-grained (UFG) metals. Special attention is devoted to the key strategies and procedures developed to concurrently optimize both the strength and tensile ductility of NC and UFG metals with an emphasis on the effects of basic deformation mechanisms, crystallographic structure, chemical composition and the presence of second-phase precipitates