Results 211 to 220 of about 148,518 (267)
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Coupling between grain growth and grain rotation
Applied Physics Letters, 2007Grain boundary motion during grain growth or recrystallization is considered as a diffusion process of atomic movement across the boundary. It can be accompanied by subgrain rotation or nanograin rotation. However, grain boundary migration can be achieved also by dislocation motion or creep.
Rath, B., Winning, M., Li, J.
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The in-vitro “growth” of gold grains
Geology, 2015Gold colloids, octahedral platelets, and foils, directly and indirectly formed from the reduction of soluble Au(I) thiosulfate and Au(III) chloride complexes by iron-oxidizing bacteria, cyanobacteria, and sulfate-reducing bacteria, were combined in an experimental system.
Shuster, Jeremiah, Southam, Gordon
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Computer simulation of grain growth—V. Abnormal grain growth
Acta Metallurgica, 1985Abstract Monte Carlo computer simulation techniques have been utilized to investigate abnormal grain growth in a two dimensional matrix. The growth of abnormally large grains is modelled under two conditions: 1. (a) where the driving force is provided solely by curvature and 2.
D.J Srolovitz, G.S Grest, M.P Anderson
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How Grain Growth Stops: A Mechanism for Grain-Growth Stagnation in Pure Materials
Science, 2010Taking the Rough with the Smooth Even with extensive annealing at high temperatures, most polycrystalline materials will not become a perfect single crystal, which would represent the thermodynamically preferred state. The stability of the polycrystalline state has been attributed to the presence of impurities that accumulate at ...
Elizabeth A, Holm, Stephen M, Foiles
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Scaling Behavior of Grain-Rotation-Induced Grain Growth
Physical Review Letters, 2002Recent investigations of grain growth in nanocrystalline materials have revealed a new growth mechanism: grain-rotation-induced grain coalescence. Based on a simple model employing a stochastic theory and using computer simulations, here we investigate the coarsening of a polycrystalline microstructure due solely to the grain-rotation coalescence ...
Moldovan, D. +3 more
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On a stochastic theory of grain growth—II
Acta Metallurgica et Materialia, 1990Abstract The stochastic theory of grain growth proposed previously [C. S. Pande, Acta metall.35, 2671 (1987)] is examined and discussed in the light of a recent criticism [N. Ryum and O. Hunderi, Acta metall.37, 1375 (1989)]. We show that the theory is able to answer all major objections raised by Ryum and Hunderi.
C.S. Pande, E. Dantsker
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Grain-Boundary Migration and Grain Growth
Metal Science, 1974AbstractThe principles of grain growth are reviewed and grain-boundary migration is discussed in this context. The specification of the driving force for grain growth on the basis of microstructural parameters is one of the central problems in grain-growth kinetics.
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Effect of microelasticity on grain growth: Texture evolution and abnormal grain growth
Scripta Materialia, 2011A phase field grain growth model including elastic anisotropy and inhomogeneity was developed to demonstrate the effect of microelasticity on the grain growth. The mechanical response against an external load was found to control grain growth and texture evolution. In contrast to previous macroelastic descriptions, these results showed that elastically
Dong-Uk Kim +5 more
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Grain Growth in Sintered Uranium Dioxide: II, Columnar Grain Growth
Journal of the American Ceramic Society, 1962Evidence is presented which shows that columnar grains can be induced to grow in high‐density sintered uranium dioxide specimens by applying a steep temperature gradient at temperatures above 1700°C but below the melting point of 2800°C.
J. R. MacEWAN, V. B. LAWSON
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Annual Review of Materials Research, 1990
in the average crystal orientation and can even result in epitaxial films. It is therefore not surprising that grain growth can profoundly affect the mechanical, electrical, and chemical properties of thin films. In this article the mechanisms and modes of grain growth in thin films will be reviewed.
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in the average crystal orientation and can even result in epitaxial films. It is therefore not surprising that grain growth can profoundly affect the mechanical, electrical, and chemical properties of thin films. In this article the mechanisms and modes of grain growth in thin films will be reviewed.
openaire +1 more source