Explore: *grain Boundaries

materials science, a grain boundary is the interface between two grains, or crystallites, in a polycrystalline material. Grain boundaries are two-dimensional

rate of solidification are ways to alter grain size. In grain-boundary strengthening, the grain boundaries act as pinning points impeding further dislocation

relative to coarser grains, especially at high temperatures, because smaller grains contain more atoms in grain boundary sites. Grain boundaries also cause deformation

dependent on grain boundary sliding. During high temperature creep, wavy grain boundaries are often observed. We can simulate this type of boundary with a sinusoidal

material or the grain boundaries to the surface of pores, thereby eliminating porosity and increasing the density of the sample. A grain boundary (GB) is the

occurs when a crack propagates along the grain boundaries of a material, usually when these grain boundaries are weakened. The more commonly seen transgranular

of the grain. The final two numbers specify the plane of the grain boundary (or a unit vector that is normal to this plane). Grain boundaries disrupt

nature of grain boundaries means that vacancies can diffuse more rapidly down boundaries leading to more rapid Coble creep. Since boundaries are regions

otherwise corrosion-resistant alloys, when the grain boundaries are depleted, known as grain boundary depletion, of the corrosion-inhibiting elements

long lines of mortar in between. Segregation to grain boundaries, for example, can lead to grain boundary fracture as a result of temper brittleness, creep