WebDec 5, 2024 · This framework permits the prediction of grain boundary evolution, in the vicinity of high energy density sources of heat, with various distributions of second phase particles with homogeneous and ... WebMay 25, 2024 · The shape and density of grain boundary defects in graphene strongly influence its electrical, mechanical, and chemical properties. However, it is difficult and elaborate to gain information about the large-area distribution of grain boundary defects in graphene. An approach is presented that allows fast visualization of the large-area ...
Grain Boundary - an overview ScienceDirect Topics
WebJan 11, 2024 · After annealing for 10 min, a close observation of the twin boundary in Figure 13b reveals that the so-called grain boundary is still only a series of stacking faults, and there is still a high dislocation density between the stacking and stacking faults, meaning that distorted grains still exist. Stacking faults develop with grain boundary ... WebJun 4, 2013 · Carbon coated TiO2–SiO2 nanocomposites (CTSO) with high grain boundary density fabricated by a simple hydrothermal approach have been investigated as anode materials for lithium-ion batteries. The CTSO anode exhibits superior high-rate capability and excellent cycling performance. the partain family
Influence of the twin boundary and Cr segregation on the spalling …
WebJul 17, 2024 · The grain boundary segregation isotherm and phase diagram are computed for a regular binary solid solution, and qualitatively benchmarked for the Pt–Au system. The relationships between the grain boundary's atomic density, excess free volume, and misorientation angle are discussed. Using density functional theory computer simulations of grain boundaries have shown that the band gap can be reduced by up to 45%. In the case of metals grain boundaries increase the resistivity as the size of the grains relative to the mean free path of other scatters becomes significant. See more 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 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-angle status. In the case of simple tilt … See more The movement of grain boundaries (HAGB) has implications for recrystallization and grain growth while subgrain boundary (LAGB) movement strongly influences recovery and the nucleation of recrystallization. A boundary moves … 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 … 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 … See more The excess volume is another important property in the characterization of grain boundaries. Excess volume was first proposed by … 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 WebJan 11, 2024 · By means of density functional theory, we investigate the effect of impurities on structural, electronic and mechanical properties on Nickel Σ5 grain boundary (GB) … shuwork