Web粒界リュウカイgrain boundary. 結晶粒界 ともいう.. 多結晶体 の 結晶粒 の 境界 をいう.. 格子欠陥 の 一種 であり,結晶粒の大きい場合には,粒界にそって 破断 が進む原因と …
Grain growth - Wikipedia
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Grain boundaryの意味・使い方・読み方 Weblio英和辞書
WebOct 23, 2024 · Grain boundary and point defect scattering have two distinct effects: they both reduce the absolute value of κ Lat and its temperature dependence, as illustrated in Fig. 6(b). In materials science, a grain boundary is the interface between two grains, or crystallites, in a polycrystalline material. Grain boundaries are two-dimensional defects in the crystal structure, and tend to decrease the electrical and thermal conductivity of the material. Most grain boundaries are preferred … See more It is convenient to categorize grain boundaries according to the extent of misorientation between the two grains. Low-angle grain boundaries (LAGB) or subgrain boundaries are those with a misorientation less … See more The energy of a low-angle boundary is dependent on the degree of misorientation between the neighbouring grains up to the transition to high … See more The movement of grain boundaries (HAGB) has implications for recrystallization and grain growth while subgrain boundary … See more Grain boundaries can cause failure mechanically by embrittlement through solute segregation (see Hinkley Point A nuclear power station) … See more A boundary can be described by the orientation of the boundary to the two grains and the 3-D rotation required to bring the grains into coincidence. Thus a boundary has 5 macroscopic degrees of freedom. However, it is common to describe a … See more The excess volume is another important property in the characterization of grain boundaries. Excess volume was first proposed by Bishop in a private communication to … See more Grain boundaries are the preferential site for segregation of impurities, which may form a thin layer with a different composition from the bulk. For example, a thin layer of silica, … See more Webnanometer scale), grain boundary accom-modation remains dominant, but grain boundaries start to also emit partial dislo-cations. As grain sizes increase, several partial or imperfect dislocations nucleate in different regions of the grain boundary, in contrast to the emission of full or per-fect dislocations known from coarse grained metals (15). fish poop for plants