grain boundary dislocation 中文意思是什麼

grain boundary dislocation 解釋
晶界位錯
  • grain : n 1 穀物，糧食〈英國叫 corn〉; 谷類植物。2 穀粒，籽粒。3 （沙、金、鹽等的）粒，顆粒，晶粒。4 些微...
  • boundary : n 邊界，疆界，限界 （between）;（球場）邊線；界標；界限，范圍，分野。 aboundary dispute 邊界糾紛...
  • dislocation : n. 1. 【醫學】脫位，脫臼；離位，轉位，位移。2. 【地質學；地理學】斷層，斷錯；【物理學】位錯。3. 混亂，打亂。
  1. All main ways of metal strengthening including grain refining strengthening, dislocation strengthening, grain boundary and substructure strengthening, second phase strengthening, solid solution strengthening, as well as trip strengthening and so on, have totally found expression in the adi

    金屬強化的幾種主要方式：細晶強化，位錯強化，晶界與亞結構強化，第二相強化，固溶強化，細晶強化以及trip強化等都在等溫淬火球鐵中得到了體現。
  2. Many dislocations were emitted from the grainboundary in the front of crack and were driven out of grain boundary area, leaving dislocation free zone in the front of grainboundary. a concept of grainboundary dislocation free zone is proposed. the deformation in the front of crack tip in magnesium was single slip, which resulted in the thinning in the area of crack tip

    首次發現裂尖前方晶界對裂尖發射的位錯有排斥作用，裂尖前方的晶界可以向晶界兩側晶粒發射位錯，位錯從晶界發出后迅速離開晶界向前運動，形成晶界無位錯區，首次提出晶界無位錯區的概念。
  3. In the theoretical simulation on the behavior of single helium atom in aluminum, the varieties of energy data including the formation, migration, binding, and dissociation energies for single helium atom at the interstitial, vacancy, grain boundary, and dislocation sites in aluminum lattice were calculated, based on the density functional theories, general gradient approximation and pseudopotential plane wave method. results showed that the most fittable sites for containing helium atoms inside the cell are vacancies. but in the view of the whole lattice, grain boundaries are the best

    計算結果表明，晶內he原子擇優佔位區是空位，而在整個晶體范圍，最有利於容納he原子的區域是晶界，位錯容納he原子的能力次於晶界和空位；在fcc -鋁的間隙位中， he原子優先充填四面體間隙位；晶內間隙he原子是可動的，通過間隙he原子的運動，可在晶內聚集，或被空位、晶界、位錯等缺陷束縛。
  4. In order to improve the properties of materials, one needs to understand the structural relationship between interface and matrix of the materials, such as interface atomic structure, misfit dislocation, chemical bond structure, stress field distribution, composition segregation etc. there are tremendous research works on the grain boundary and interface structures during last century and the sophisticated theory about grain boundary and interface, i. e. coincidence site lattice and 0 - lattice theories had been developed simultaneously

    眾所周知，材料的宏觀性質是由其微觀結構所決定的，因此，為了改善材料的宏觀性能我們有必要弄清楚材料的界面與基體之間的結構關系，如界面的原子結構、失配位錯、化學鍵合、應力場的分佈等等。在上世紀，人們已對晶界和相界面結構進行了大量的研究，同時，相關的理論如「重位點陣」和「 o -點陣」理論也發展成熟。
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