Diffusion induced grain boundary migration

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August undefined, 2024

WebThe effect of diffusion induced grain-boundary migration (DIGM) on grain growth has been studied in a model system of BaTiO 3-PbTiO 3.When sintered BaTiO 3 samples of … WebSep 14, 2024 · While recrystallization (or to avoid confusion, “conventional nucleation during recrystallization”) involves the formation of new strain-free grains by nucleation in the strained regions, SIBM comprises migration of grain boundaries of the preexisting strain-free grains into the deformed regions.

Diffusion induced grain boundary migration - 百度学术

WebJan 1, 2005 · Such processes include Coble creep, sintering, diffusion-induced grain boundary migration, discontinuous reactions (such as discontinuous precipitation, discontinuous coarsening, etc.),... WebDiffusion along static dislocations, low angle grain boundaries, and high angle grain boundaries is considered next. For most cases of interest this short-circuit diffusion process is essentially “in series” with a volume … the cycle crashing mid game

Phase-field model for diffusion-induced grain boundary …

WebNov 1, 2024 · It was found that diffusion-induced grain boundary migration (DIGM) is responsible for the rapid Cr transportation and the formation of a continuous Cr 2 … WebDec 14, 2005 · Stress-induced grain boundary migration is theoretically described as a new mode of rotational plastic deformation in nanocrystalline materials. We have calculated the strain energy change due to migration of a … WebThe diffusion induced grain boundary migration (DIGM) has been studied in the Ni(Cu) system over the temperature range 723--1,023 K using light microscopy, scanning … the cycle damage charts

Solute concentration change in alloyed zones caused by diffusion ...

Role of diffusion-induced grain boundary migration in the …

WebMay 1, 1995 · Diffusion induced grain boundary migration (DIGM) has been investigated in more than 35 systems, however, the nature of the driving force, kinetic behavior and mechanism is still unclear. In the present study, the Ni(Cu) system was chosen to investigate the kinetic behavior of DIGM since many results concerning DIGM in this … WebOct 1, 1988 · Diffusion-induced grain boundary migration has been studied by zincification of pure iron. The temperature dependence of the rate was measured at … the cycle crossplayWebJun 1, 2024 · Diffusion-induced grain boundary migration (DIGM) is the phenomenon of normal grain boundary (GB) migration caused by the lateral diffusion of solutes along it. Despite its technological... the cycle crashing

"WebAbstract. In this article, we present results of systematic studies of the effects of grain boundary parameters upon diffusion-induced grain boundary migration (DIGM). It is shown that grain boundary velocity, solute penetration depth, concentration of deposited solute, and activation energy are all strongly and reproducibly dependent upon the ... " - Diffusion induced grain boundary migration

Diffusion induced grain boundary migration

WebAug 22, 2008 · Grain boundaries affect the migration of atoms and electrons in polycrystalline solids, thus influencing many of the mechanical and electrical properties. By introducing nanometer-scale twin defects into copper grains, we show that we can change the grain-boundary structure and atomic-diffusion behavior along the boundary. WebNov 20, 2013 · Diffusion induced grain boundary migration (DIGM) is a phenomenon in which the sideways migration of grain boundaries accompanies the diffusion of solute …

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WebJun 25, 2024 · Diffusion-induced grain boundary migration is a phenomenon in which a grain boundary moves in response to the driving forces generated by diffusing solute … WebWe investigate the grain boundary effect on Li-ion diffusivity and intercalation-induced stress in a single-particle Li-ion cell. The measured activation energy for self-diffusion at the grain boundary is a fraction of that in the lattice due to the loosely packed structure, and this results in a diffusivity that is 3–16 orders of magnitude higher in the grain boundary …

WebDiffusion-induced grain boundary migration (DIGM) can occur due to diffu-sion of solute atoms in or out of the grain boundaries, leaving in the wake an alloyed or … WebDec 18, 2009 · Grain boundaries are widely envisaged to be mechanically static structures, but this report outlines an experimental investigation of stress-driven grain boundary migration manifested as grain growth in nanocrystalline aluminum thin films.

WebJun 25, 2024 · Diffusion-induced grain boundary migration is a phenomenon in which a grain boundary moves in response to the driving forces generated by diffusing … WebJul 5, 2014 · Grain-boundary diffusion is of concern. It has caused two very well-known failure modes in Si devices: electromigration in Al interconnects and Al-penetration into Si through diffusion barriers. In electromigration, it is known that voids are formed at the triple point of grain boundaries and extend out along grain boundaries.

WebThe paper summarizes recent experiments on diffusion at migrating grain boundaries (GBs) occurring during discontinuous reactions, like discontinuous precipitation (DP) and …

WebA theory of diffusion induced grain boundary migration (DIGM) is presented for high temperatures where volume diffusion of solute atoms out of the grain boundary is important. It is shown that due to… Expand 7 Phase field modelling of diffusion induced grain boundary migration in binary alloys. D. Mukherjee, Henrik Larsson, J. Odqvist the cycle crescent fallsWebMar 10, 2024 · Here we show that atomic diffusion inside the grain boundary plane is about four times higher than bulk diffusion, at any temperature, and exhibits a typical Arrhenius behavior with a very small energy barrier … the cycle consoleWebJan 11, 2024 · Grain boundary (GB) migration plays an important role in modifying the microstructures and the related properties of polycrystalline materials, and is governed by the atomistic mechanism by... the cycle customer support the cycle creaturesWebThis article is published in Scripta Metallurgica Et Materialia.The article was published on 1990-12-01. It has received 6 citation(s) till now. The article focuses on the topic(s): Ion beam & Ion beam deposition. the cycle crashing on startupWebJul 1, 2024 · Interdiffusion along grain boundaries can lead to shift of grain boundaries in form of Grain Boundary Diffusion Induced Grain Boundary Migration, DIGM, in systems forming wide range... the cycle crescent falls mapWebJan 11, 2024 · It was revealed that the GB migration proceeds by the cooperative shuffling of atoms on GB ledges along specific routes, passing through several different stable and metastable GB structures with low energies, and it was demonstrated that GB migration could be facilitated by the GB structural transformations between these low-energy … the cycle cycle