Grain boundary 意味
WebMay 1, 2000 · The grain boundary of (334) Σ17b is shown to be a plane matching boundary which is regarded as one of the low energy boundaries. Interface dislocations to assure the coherency at the boundary are ... Web彭海燕，康志新，李小珍，周莉，龙雁球磨时间对NbMoTaWVCr难熔高熵合金组织与性能的影响彭海燕1, 2，康志新2, 3，李小珍2，周莉
Grain boundary 意味
Did you know?
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
WebHigh and Low Angle Boundaries. It is convenient to separate grain boundaries by the extent of the mis-orientation between the two grains. Low angle grain boundaries (LAGBs) are those with a misorientation less than about 11 degrees. Generally speaking they are composed of an array of dislocations and their properties and structure are a function of … Webgrain)の 集合体(多 結晶体,polycrysta1)で ある.一 つ一つの 結晶粒は単結晶(single crysta1)で あり,そ れぞれに点欠陥, 線欠陥および面欠陥を含んでいる.結 晶粒同士の境界を結晶 …
WebFig. 4.1. A grain boundary between two crystals misoriented by an angle about an axis normal to the page. 92 Recrystallization. experimentally (§A2.6.3), and in many cases, we neglect it and consider only the three parameters which define the orientation between the two grains adjacent to a boundary. Web結晶粒界（grain boundary）は，異なる結晶方位を持つ隣接粒間の境界である．通常，ある結晶粒中の すべり面は粒界を挟んで不連続であり，通常転位は粒界を通り越えて移 …
http://www.numse.nagoya-u.ac.jp/P6/kobashi/img/file48.pdf
WebJun 19, 2024 · Evidence suggests that the interfaces between crystals of the material – the grain boundaries – influence how materials will fail. This area has been the subject of Dr Srikanth Patala’s research. Crystallographies. Dr Patala and his team investigated how crystals come together to form a material and how its structure influences properties ... bizhub 4052 driver windows 10WebNov 4, 2024 · High grain boundaries also pose to have excessive hardness and internal strength at the expense of ductility and toughness, thereby subjecting the grain to the point of crack initiation [44]. It ... bizhub 423 driver downloadWebNov 12, 2024 · 纵横比也属于超声鉴别诊断乳腺癌的重要指标，有研究明确指出，乳腺癌患者的纵横比＞1，但乳腺良性肿瘤患者的纵横比＜1[6]。纵横比＞1往往意味着肿块组织的生长已经脱离正常速度，所以前后径明显增大，这一指标可辅助临床鉴别患者乳腺肿瘤良恶性。 date of stampingWebAug 14, 2007 · The effects of the lattice misorientations at the grain boundaries (GBs) have been included by accounting for the densities of the misfit dislocations at the GBs that accommodate these misorientations. By directly accounting for the misfit dislocations, the strength of the boundary regions can be more accurately represented to account for ... date of spring equinox 2023WebThe boundary between one grain and its neighbour (grain boundary) is a defect in the crystal structure and so it is associated with a certain amount of energy. As a result, … date of spring this yearWebThe grain boundary is not flat (not on one plane), but arbitrarily bent. The grain boundary contains (atomic) steps and other local "grain boundary defects". The grain boundary contains foreign atoms or even … bizhub 3851 waste tonerWebGrain boundaryの意味や使い方 結晶粒界 - 約1465万語ある英和辞典・和英辞典。 発音・イディオムも分かる英語辞書。 Grain boundary: 結晶粒界; 粒界 date of state of origin 2023