- grain boundary energy
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• зернограничная энергия• энергия границ зерен
English-Russian dictionary of geology. 2011.
grain boundary energy
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Grain boundary strengthening — (or Hall Petch strengthening) is a method of strengthening materials by changing their average crystallite (grain) size. It is based on the observation that grain boundaries impede dislocation movement and that the number of dislocations within a … Wikipedia
Grain boundary — A grain boundary is the interface between two grains in a polycrystalline material. Grain boundaries disrupt the motion of dislocations through a material, so reducing crystallite size is a common way to improve strength, as described by the Hall … Wikipedia
Grain growth — refers to the increase in size of grains (crystallites) in a material at high temperature. This occurs when recovery and recrystallisation are complete and further reduction in the internal energy can only be achieved by reducing the total area… … Wikipedia
Recrystallization (metallurgy) — Recrystallization is a process by which deformed grains are replaced by a new set of undeformed grains that nucleate and grow until the original grains have been entirely consumed. Recrystallization is usually accompanied by a reduction in the… … Wikipedia
Liquid metal embrittlement — is a phenomenon of practical importance, where certain ductile metals experience drastic loss in tensile ductility or undergo brittle fracture when tested in the presence of specific liquid metals. Generally, a tensile stress, either externally… … Wikipedia
Sintering — is a method used to create objects from powders. It is based on atomic diffusion. Diffusion occurs in any material above absolute zero but it occurs much faster at higher temperatures. In most sintering processes the powdered material is held in… … Wikipedia
Segregation in materials — refers to the enrichment of a material constituent at a free surface or an internal interface of a material. In a polycrystalline solid, a segregation site can be a dislocation, grain boundary, stacking fault, or an interface with a precipitate… … Wikipedia
Recovery (metallurgy) — Recovery is a process by which deformed grains can reduce their stored energy by the removal or rearrangement of defects in their crystal structure. These defects, primarily dislocations, are introduced by plastic deformation of the material and… … Wikipedia
Crystallite — Galvanized surface with visible crystallites of zinc. Crystallites in the steel under the coating are microscopic. Crystallites are small, often microscopic crystals that, held together through highly defective boundaries, constitute a… … Wikipedia
Dislocation — For the syntactic operation, see Dislocation (syntax). For the medical term, see Joint dislocation. In materials science, a dislocation is a crystallographic defect, or irregularity, within a crystal structure. The presence of dislocations… … Wikipedia
Transparency and translucency — Diaphanes redirects here. For the genus of firefly, see Diaphanes (beetle). Translucence redirects here. For other uses, see Translucence (disambiguation). Translucent redirects here. For the Japanese manga series, see Translucent (manga).… … Wikipedia
