Grain-boundary kinetics: a unified approach

WebDec 2, 2024 · Grain boundary motion can be driven by a chemical potential that jumps across a GB or by shear applied parallel to the GB plane; the driving force has three components. Hence, the GB mobility... WebJul 1, 2024 · First principles calculations were performed to study the kinetics of four experimentally observed grain boundaries consisting of two general asymmetric …

[1803.03214] Grain-Boundary Kinetics: A Unified Approach

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. WebThe microstructure of polycrystalline materials consists of networks of grain boundaries (GBs) and triple junctions (TJs), along which three GBs meet. The evolution of such … grapevine tx places to eat https://i-objects.com

Grain-Boundary Kinetics: A Unified Approach Request …

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 ). WebMar 8, 2024 · Grain boundaries (GBs) that show higher mobility at lower temperatures (i.e., the so-called nonthermally activated or non-Arrhenius GBs) have attracted … WebJan 18, 2024 · We derive a theory that describes homogeneous nucleation of grain boundary (GB) phases. Our analysis takes account of the energy resulting from the GB phase junction, the line defect separating... chip seq method antibody

Grain-boundary kinetics: A unified approach - ScienceDirect

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Grain-boundary kinetics: a unified approach

A UNIFIED APPROACH TO GRAIN BOUNDARY DIFFUSION …

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 … WebMar 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 …

Grain-boundary kinetics: a unified approach

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WebMar 8, 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 dislocation character gives rise to… Expand 6 PDF A Continuum Multi-Disconnection-Mode model for grain boundary migration Chaozhen Wei, Spencer L. Thomas, Jian Han, D. …

WebOct 5, 2024 · Our theoretical model is used to establish a neutral stability surface demarcating stable and unstable perturbations. It is shown that GBs play a … WebMay 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 …

WebDec 14, 2024 · In this paper, we discuss a class of fundamentally different GB phase transitions. We identify a GB topological phase transition of a type of the class originally … WebOct 8, 2024 · We determined the velocities and curvatures of approximately 52,000 grain boundaries in a nickel polycrystal using three-dimensional orientation maps measured by high-energy diffraction microscopy before and after annealing at 800°C. Unexpectedly, the grain boundary velocities and curvatures were uncorrelated.

WebGrain-Boundary Kinetics: A Unified Approach - CORE Reader

WebThe orientation dependence on recovery has been studied in cold-rolled and annealed polycrystalline high-purity aluminium (99.99 wt%), binary Al-0.25Mn and commercial purity aluminium. The growth mechanisms were found to be independent of the alloy system and the microchemistry only influences the coarsening kinetics. Orientation-dependent … chip seq pcaWebGrain 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 kinetics provides effective means to tailor polycrystal … chip seq narrow peakWebMar 18, 2024 · Grain boundaries (GBs) are considered as the effective sinks for point defects, which improve the radiation resistance of materials. However, the fundamental mechanisms of how the GBs absorb... grapevine tx property taxWebGrain-boundary kinetics: A unified approach: Authors: Han, Jian Thomas, Spencer L. Srolovitz, David J. Keywords: Grain-boundary kinetics Shear coupling Grain boundary … grapevine tx psychiatristWebSep 16, 2024 · This phenomenon, known as grain growth, is governed by GB kinetics. Growing grains induce stresses on and experience complex interactions with nearby grains and defects. There are two types of grain growth: normal grain growth (NGG) and abnormal grain growth (AGG). chipseq peak是什么WebMar 8, 2024 · Abstract: Grain boundaries (GBs) are central defects for describing polycrystalline materials, and playing major role in a wide-range of physical … chipseq peaks注释WebJan 21, 2024 · Grain 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... chip seq peak