Grain-boundary kinetics: a unified approach

Author: afvf

August undefined, 2024

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 … WebAn atomistic study of tilt grain boundary structures in f.c.c. metals has been made. The principal aim of this study is to understand the structure of long-period (‘general’) tilt boundaries. ... Han J, Thomas S and Srolovitz D (2024) Grain-boundary kinetics: A unified approach, Progress in Materials Science, 10.1016/j.pmatsci.2024.05.004 ...

Metals Free Full-Text Orientation Independent and Dependent ...

WebMar 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... 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. simplicity 1789

Grain-Boundary Kinetics: A Unified Approach - arxiv-vanity.com

WebJul 1, 2024 · First principles calculations were performed to study the kinetics of four experimentally observed grain boundaries consisting of two general asymmetric … 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... WebSep 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). raymark mechanical

HKU Scholars Hub: Grain-boundary kinetics: A unified …

Grain-Boundary Kinetics: A Unified Approach Request …

WebMar 1, 2024 · Grain boundaries (GBs) are central defects for describing polycrystalline materials, and playing major role in a wide-range of physical properties of polycrystals. … 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 ... simplicity 1793WebJun 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. raymark london ltd

"WebGrain-boundary kinetics: A unified approach: Authors: Han, Jian Thomas, Spencer L. Srolovitz, David J. Keywords: Grain-boundary kinetics Shear coupling Grain boundary … " - Grain-boundary kinetics: a unified approach

Grain-boundary kinetics: a unified approach

Plateau–Rayleigh instability with a grain boundary twist

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. … 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

Did you know?

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 …

WebGrain-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? WebA UNIFIED APPROACH TO GRAIN BOUNDARY DIFFUSION AND NUCLEATION IN THIN FILM REACTIONS K.R. *IBM, COFFEY* and K. BARMAK** Storage Systems Division, …

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 kinetics provides effective means to tailor polycrystal … WebOct 1, 2024 · Grain-boundary kinetics: A unified approach. Grain boundaries (GBs) are central defects for describing polycrystalline materials, and playing major role in a …

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 …

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 … raymark investment limitedWebMar 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 … raymark london limitedWebGrain 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 … simplicity 1800 dressWebJan 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... simplicity 1801WebAug 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. simplicity 1795WebFigure 46: Schematic of emission of lattice dislocations into the upper and lower grains under tensile stress σ. (a) Emission of lattice dislocations. (b) Residual lattice dislocations left at the GB after emission. (c) Dissociation of the residual lattice dislocations into GB disconnections following the reaction shown in Fig. 45. (d) Annihilation of the glissile … simplicity 1799WebApr 15, 1994 · An alternative model is proposed to extend the conventional view of diffusion under a concentration gradient in a grain boundary phase of width d. The conventional … raymark roofing