Grain-boundary kinetics: a unified approach
WebMar 8, 2024 · Abstract: Grain boundaries (GBs) are central defects for describing polycrystalline materials, and playing major role in a wide-range of physical … WebJun 18, 2024 · At the critical value, the loop is structurally equivalent to the so-called “flower defect” and the shrinkage rate diverges. Our results thus reveal a general limit on the formation of grain boundary loops in 2D crystals and elucidate the central role of defects in both the onset of plasticity and the kinetics of grain boundaries.
Grain-boundary kinetics: a unified approach
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WebGrain boundary (GB) kinetics is important for many applications in 2d materials and metal thin films. To study how the substrate shape affects GB mobility and kinetics, we develop a kinetic WebAug 28, 2024 · Grain boundary (GB) motions, such as migration, sliding and rotation, have been shown to play a vital role in the mechanical performance of polycrystalline metals. Despite extensive efforts have been made on the pure polycrystalline metals, few attentions have been paid to those in alloys.
WebMar 17, 2024 · A GB slides when the two adjoining grains undergo a relative displacement parallel to the boundary plane. GB sliding, sometimes coupled with GB migration, can strongly affect the inelastic deformation of polycrystalline materials, such as diffusional creep at elevated temperature ( 3, 4) and plastic deformation at ambient temperature ( 5 – 7 ). WebGrain boundaries (GBs) are central defects for describing polycrystalline materials, and playing major role in a wide-range of physical properties of polycrystals. Control over GB …
WebRoberts and Ahlblom suggested that Cahn kinetics is only valid up to the point when all initial grain boundary face area was swept by the nuclei, i.e., site saturation, and then DRX should be modeled by an interfacial approach. Therefore, in the present work, modeling of the DRX kinetics is achieved by starting with the model proposed by Cahn ... WebA UNIFIED APPROACH TO GRAIN BOUNDARY DIFFUSION AND NUCLEATION IN THIN FILM REACTIONS K.R. *IBM, COFFEY* and K. BARMAK** Storage Systems Division, …
WebDec 23, 2024 · Grain boundary (GB) migration is one of the most important phenomena in materials science, which plays a key role in modifying the microstructures and properties of polycrystalline ceramic materials. Understanding how GB migrates is thus a fundamental and critical issue for future ceramic material design.
WebSep 28, 2011 · A unified model of grain-boundary segregation kinetics is established, which can simulate the equilibrium and non-equilibrium grain-boundary segregation … orchard preschool lustleighWebGrain-boundary kinetics: A unified approach: Authors: Han, Jian Thomas, Spencer L. Srolovitz, David J. Keywords: Grain-boundary kinetics Shear coupling Grain boundary migration Disconnections Grain boundary: Issue Date: 2024: Citation: Progress in Materials Science, 2024, v. 98, p. 386-476 How to Cite? orchard preservations exeterWebOct 1, 2024 · Grain-boundary kinetics: A unified approach. Grain boundaries (GBs) are central defects for describing polycrystalline materials, and playing major role in a … ipswitch imail filterWebA unified model of grain-boundary segregation kinetics is established, which can simulate the equilibrium and non-equilibrium grain-boundary segregation kinetics during … ipswitch downloadsWebThe microstructure of polycrystalline materials consists of networks of grain boundaries (GBs) and triple junctions (TJs), along which three GBs meet. The evolution of such microstructures may be driven by surface tension (capillarity), applied stresses, or other means that lead to a jump in chemical potential across the GBs. ipswitch export private keyWebMay 6, 2024 · Grain boundary (GB) dynamics are largely controlled by the formation and motion of disconnections (with step and dislocation characters) along with the GB. The … ipswitch email sign inWebMar 8, 2024 · Abstract:Grain boundaries (GBs) are central defects for describing polycrystalline materials, and playing major role in a wide-range of physical properties of … ipswitch imail server download