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Showing 1 to 7 of 7 for “"grain boundary motion"”.
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Tensile Stress and Thermal Growth Effects on Grain Boundary Motion in Nanocrystalline Nickel
… involve molecular dynamics (MD) simulations of grain boundary motion in nanocrystalline (nc) nickel. The first study is conducted to examine the effects of an applied tensile stress on the grain boundary motion in 5 nm3 nc-Ni specimens, half of which contain free surfaces, while the other half …
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Grain boundary motion under high temperature low cycle deformation : study of mechanism, kinetics and driving force
… to investigate the mechanism and kinetics of grain boundary motion during high temperature low cycle deformation (HT-LCF) of high purity aluminium bicrystals under two distinct conditions of cyclic deformation. The first part of the study emphasises the high temperature cyclic stress response …
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Topological descriptions of grain boundaries in graphene
… method to tune the properties of graphene. Grain boundaries made of 5-7 dislocations are the most prominent defect in graphene and have been shown to be responsible for variability in properties. Therefore, we analyze how to change the structure of graphene through control of grain boundary …
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Phase Field Modeling of Grain Growth in Porous Polycrystalline Solids
The concurrent evolution of grain size and porosity in porous polycrystalline solids is a technically important problem. All the physical properties of such materials depend strongly on pore fraction and pore and grain sizes and distributions. Theoretical models for the pore-grain boundary …
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Microstructural evolution during the homogenization heat treatment of 6XXX and 7XXX aluminum alloys
… minimization of the microsegregation across the grains through diffusion, dissolution of the low-melting phases, which enhances the surface finish of the extrusions, and precipitation of nano-sized dispersoids (for Cr-, Zr-, Mn-, Sc-containing alloys), which inhibit grain boundary motion to …
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Simulations of diffusion driven phase evolution in heterogenous solids
… important to model the effect of interfacial motion and micro-structural evolution due to diffusion on the reliability of micro-electronics components. Examples of interfacial motion phenomena in solids include crack propagation, grain boundary motion, diffusion driven void motion through sur- …
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Modelling of Microstructure Development in Silicon-containing Bainitic Free-machining Steels
… machining; its effect on the prior austenite grain size has been investigated, taking account of the sulphide shape. The theories of all the major solid state phase transformations involved in steel are reviewed in chapter 2. The theory of the simultaneous transformation model is presented in …