Abnormal or discontinuous grain growth leads to a heterogeneous microstructure where a limited number of grains grow much faster than the rest.
Abnormal or discontinuous grain growth, also referred to as exaggerated or secondary recrystallisation grain growth, is a grain growth phenomenon in which certain energetically favorable grains (crystallites) grow rapidly in a matrix of finer grains, resulting in a bimodal grain-size distribution.
In ceramic materials, this phenomenon can result in the formation of elongated prismatic, acicular (needle-like) grains in a densified matrix. This microstructure has the potential to improve fracture toughness by impeding the propagation of cracks.[1]
^Padture, N. P.; Lawn, B. R. (1994). "Toughness properties of a silicon carbide with an in situ induced heterogeneous grain structure". J. Am. Ceram. Soc.77 (10): 2518–2522. doi:10.1111/j.1151-2916.1994.tb04637.x.
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Abnormal or discontinuous graingrowth, also referred to as exaggerated or secondary recrystallisation graingrowth, is a graingrowth phenomenon in which...
room-temperature and so display a higher yield stress when the grain size is reduced (assuming abnormalgraingrowth has not taken place). At high temperatures the opposite...
with a random spread of orientations, one has a mosaic crystal. Abnormalgraingrowth, where a small number of crystallites are significantly larger than...
energy. This graingrowth can either be normal or abnormal, a normal graingrowth is characterized by the uniform growth and size of all the grains in the specimen...
and growth. The most appealing aspect of this argument, of course, is that it yields the primary morphological features of dendritic growth. Abnormal grain...
bi-disperse grain size distribution, for example those exhibiting abnormalgraingrowth, hardening mechanisms do not strictly follow the Hall–Petch relationship...
However, abnormalgraingrowth is often observed in titanium dioxide, particularly in its rutile phase. The occurrence of abnormalgraingrowth brings about...
1088/1468-6996/9/3/033001. PMC 5099652. PMID 27877995. Abnormalgraingrowth Journal of Crystal growth Effect of GrainGrowth of B-Silicon Nitride on Strength, Weibull...
mechanisms bring about increased toughness in ceramics exhibiting abnormalgraingrowth (AGG). The heterogeneous microstructures produced by AGG form materials...
grains are present. Wikimedia Commons has media related to Grain boundary. Abnormalgraingrowth Segregation in materials Lehockey, E. M.; Palumbo, G.; Lin...
bonding; this process improves fatigue resistance of the component. Abnormalgraingrowth – materials science phenomenonPages displaying wikidata descriptions...
ceramic compounds known to exhibit abnormalgraingrowth, in which large faceted grains grow in a matrix of finer grains, with profound implications on densification...
sintering involves in faster diffusion processes and may result in abnormalgraingrowth. A material's strength is dependent on its microstructure. The engineering...
allowing large amounts of energy to be supplied to the system. Abnormalgraingrowth Chiral resolution by crystallization Crystal habit Crystal structure...
single crystals, fabrication techniques also include epitaxy and abnormalgraingrowth in solids. Epitaxy is used to deposit very thin (micrometer to nanometer...
improved. Targeted metallurgical processing steps promote abnormalgraingrowth of {011} grains in galfenol and alfenol thin sheets, which contain two easy...
Ceramics with randomly oriented grains must be ferroelectric to exhibit piezoelectricity. The occurrence of abnormalgraingrowth (AGG) in sintered polycrystalline...
facilitated through the phenomenon of abnormalgraingrowth or AGG. The growth of abnormally long silicon carbide grains may serve to impart a toughening effect...
descriptions of redirect targets Crystal growth – Major stage of a crystallization process Abnormalgraingrowth – materials science phenomenonPages displaying...
acronym: Anti-Grain Geometry, computer graphics rendering library Aesthetic group gymnastics, gymnastics In a group Abnormalgraingrowth, materials science...
carbides important. In the presence of a molten phase such as cobalt, abnormalgraingrowth is known to occur in the sintering of tungsten carbide, with this...
hot isostatic pressing. Abnormalgraingrowth has been extensively reported for SiAlON ceramics, and results in a bimodal grain size distribution of the...
mold growth; it also allows the mash of converted grain to create a filter bed during lautering. As all grains sprout, natural enzymes within the grain break...
processes of abnormalgraingrowth may result in a microstructure exhibiting elongated large grains in a matrix of finer rounded grains. AGG derived microstructures...
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