WebHigh-angle boundaries are best treated as small deviations from the nearest CSL. They are then similar to low-angle boundaries that are a small deviation from the Σ1 CSL, … Web29 de mai. de 2024 · We perform comprehensive first-principles calculations and kinetic Monte Carlo simulations to explicitly elucidate the distinct roles of grain boundaries (GBs) in affecting hydrogen (H) diffusion in fcc nickel (Ni). We demonstrate the transition between slow and fast H diffusion along the GB with an abrupt change in H diffusivity. Low-angle …

Grain Boundary - an overview ScienceDirect Topics

WebGenerally, it is assumed that low-angle grain boundaries (LAGBs) are those with a misorientation less than about 15 degrees. In contrast, the misorientation of high-angle … Web7 de out. de 2024 · Antiphase boundaries are proposed to result from self-corrections applied to missing-linker and missing-node errors that occur during polymerization, while low-angle and high-angle grain... green tea honey and apple cider vinegar mask

Tougher ultrafine grain Cu via high-angle grain boundaries and …

Web1 de jun. de 2005 · According to conventional grain boundary theory, the transition from low angle to high angle grain boundaries occurs at a transition angle in the range of 10–20°, … Web25 de fev. de 2008 · Here, we demonstrate that a large fraction of high-angle grain boundaries and a low dislocation density may significantly improve the toughness and uniform elongation of UFG Cu by increasing its strain-hardening rate without any concomitant sacrifice in its yield strength. Our study provides a strategy for synthesizing … Web7 de abr. de 2024 · With an increase in flank wear width, the thickness of the metamorphic layer increased from 4.5 μm to 8.7 μm and the grain refinement intensified. The high strain rate promoted recrystallization, which caused an increase in the average grain boundary misorientation and high-angle grain boundaries, as well as a reduction in twin … green tea honey and cinnamon benefits