grain boundary diffusion
Grain Boundary Diffusion in Metals: Recent Developments
... case of non-linear segregation.) The amount of Ag tracer in the single boundary of the bicrystal was found to be remarkably higher than that in high-purity polycrystalline Cu when applying the same initial surface ...
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Volume and Grain Boundary Diffusion of Chromium in Ni Base Ni Cr Fe Alloys
... the grain boundary simultaneously, we need an analytical procedure to seperate the contributions ofthe lattice and the grain boundary to the overall depth profile ofthe diffusing ...and ...
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Low Temperature Grain Boundary Diffusion of Chromium in SUS316 and 316L Stainless Steels
... SUS316 and 316L, respectively. Each penetration profile exhibits two regions: one is the near-surface region and the other the deeper region of the profile. The former mainly corresponds to the volume diffusion process, ...
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Atomic Force Microscopy Study of the Kinetic Roughening in Nanostructured Gold Films on SiO2
... normal grain growth, the growth of ‘‘abnormal large grains’’ is ...normal grain growth appears to be (at room temperature) controlled by Au diffusion on grain boundaries (rather than by Au ...
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Experimental study on the electrical conductivity of quartz andesite at high temperature and high pressure: evidence of grain boundary transport
... represents grain boundary ...the grain interior can be determined by modeling the electrical response with equiv- alent circuit of resistance and capacitance (R 1 C 1 ...
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Influence of Plastic Deformation on Occurrence of Discontinuous Reaction in Ni In Alloy
... The growth rate, lamellar spacing and α -phase composition of the products of the first reaction have been measured and the reaction has been shown to be controlled by grain boundary diffusion of ...
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Densification Kinetics of Multi-Doped Zirconia Ceramic Body with Organic Coating Powders
... to grain size, and the densification mechanisms of bulk and grain boundary diffusion were ...that diffusion induced creep was a controlled step in the first stage of ...
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The Effect of Sm2O3 on the Sintering and Grain Growth Behaviors of SnO2-Based Ceramics
... surface diffusion, grain boundary diffusion, bulk diffusion, and plastic ...and grain growth behaviors of SnO 2 -based ...
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Superplasticity of a fine-grained Mg–1.5 wt% Gd alloy after severe plastic deformation
... average grain size of about ...of grain boundary diffusion in magnesium (75 ...by grain boundary sliding accommodated by grain boundary diffusion at 723 ...
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Modelling of stress-corrosion cracking by using peridynamics
... For the first time in the literature, a numerical multiphysics peridynamic framework for modelling adsorbed-hydrogen SCC in HSLA polycrystalline steel based on the AIDEC mechanism is presented. This study extends the ...
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Links between metamorphism and deformation in feldspar at mid-crustal conditions
... general, grain boundary sliding tends to be invoked in explanations of phase mixing, ...as grain switching, subgrain rotation recrystallization, or dissolution and precipitation (Cross and Skemer, ...
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A Phase Field Model of Sintering with Direction Dependent Diffusion
... a grain boundary shown in ...surface diffusion as an example since the role of projection tensor on surface diffusion is essentially the same as that on grain boundary ...surface ...
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Modeling anisotropic diffusion using a departure from isotropy approach
... for boundary conditions, the temperatures at the bottom and top of the domain are fixed respectively at T 0 o C and T 50 o ...the boundary element method and the commercial software ANSYS of which are ...
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Computational Study of Grain Boundaries and Nano-Reactive Materials
... Chapters 1 to 4 devote to the computational study of grain boundary (GB) structure, energy and mobilities. Despite of the considerable effort that has been placed on those topics, computational study of GB ...
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Effects of Impurities on an Al Grain Boundary
... the boundary expansion and the significant decrease ofcharge density around the impurity atoms and along the ...Al boundary means the formation of weak bond regions between ...clean boundary, there ...
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Grain Boundary Structure Dependence of Extrinsic Grain Boundary Dislocation Emission Phenomena: A Molecular Dynamics Study
... extrinsic grain boundary dislocations (EGBDs) are often present in the grain boundaries of ultra fi ne- grained (UFG) metals produced by severe plastic deformation; therefore, the emission of EGBDs ...
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Grain Boundary Sliding and Atomic Structures in Alumina Bicrystals with [0001] Symmetric Tilt Grain Boundaries
... the diffusion bonding method. The grain boundary energies of them were evaluated by the conventional thermal grooving technique, and the atomic structures of their grain bound- aries were ...
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Segregation of Alkali and Alkaline Earth Metals at Σ11(113)[110] Grain Boundary in Aluminum from First Principles Calculations
... slab containing ð113Þ free surfaces of pure Al (Fig. 1(c)), bulk of Al-based solid solution (Fig. 1(d)), bicrystal of 11ð113Þ½110 tilt grain boundaries with segregated solute atoms (Fig. 1(e)) and slab containing ...
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Diffusion Analysis across Grain Boundary in Al 3 7 mass%Cu Alloy Using Analytical Electron Microscopy
... The rectangles are selected as shown in Figs. 2(a) and (b) and the Cu K and Al K intensities within the rectangles are integrated in the direction parallel to the grain boundary. These integrated ...
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The High temperature properties of Fe Ni Cr alloys
... at grain-boundaries and propogate along the grain- boundaries, the importance of suppressing these effects becomes ...strengthening grain-boundaries has been through precipitation and segregation of ...
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