Journal ArticleDOI
Chemically induced grain boundary migration
Mats Hillert,Gary R. Purdy +1 more
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In this paper, it was shown that gram boundary motion can be induced by changing the composition by means of grain boundary diffusion, and the experimental results can be used to evaluate rather directly the grain boundary diffusivity and mobility.About:
This article is published in Acta Metallurgica.The article was published on 1978-02-01. It has received 323 citations till now. The article focuses on the topics: Grain boundary diffusion coefficient & Grain boundary strengthening.read more
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Mechanism for diffusion induced grain boundary migration
Robert W. Balluffi,John W. Cahn +1 more
TL;DR: In this paper, the authors proposed a mechanism in which differences in the diffusion coefficients of the diffusing species along the grain boundary cause a self-sustaining climb of grain boundary dislocations and motion of their associated grain boundary steps.
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Solute drag, solute trapping and diffusional dissipation of Gibbs energy
TL;DR: In this paper, the Gibbs energy dissipation approach is applied to the solute drag approach to phase transformations and applied to a wedge-shaped description of the properties of the interface, a very flexible treatment is obtained but it is difficult to decide how to choose the model parameters.
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Grain-boundary kinetics: A unified approach
TL;DR: In this article, a review of the GB kinetics literature is provided, and the authors draw comparisons from a wide swath of the extant experimental, simulation, and theoretical GB kinetic behavior literature.
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Grain boundary diffusion mechanisms in metals
TL;DR: In this article, the authors reviewed the current knowledge of the atomistic mechanisms responsible for grain boundary diffusion phenomena and concluded that the atomic migration occurs by a point defect exchange mechanism which, in at least the vast majority of boundaries in simple metals, most likely involves grain boundary vacancies.
References
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Journal ArticleDOI
Theory of crystal growth and interface motion in crystalline materials
TL;DR: In this article, the theory of crystal growth for diffuse and for non-singular surfaces is re-examined, and it is found that if a critical driving force is exceeded the surface will be able to advance normal to itself without needing steps; if this driving forces is not exceeded lateral step motion is necessary.
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The kinetics of cellular segregation reactions
TL;DR: In this paper, it was shown that at least two controlling kinetic processes are required to describe such a complex reaction, such as discontinuous precipitation and pearlite formation, in addition to diffusion control, and that the cell boundary moves with a velocity proportional to the net free energy decrease.
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On theories of growth during discontinuous precipitation
TL;DR: Growth theories for the lamellar eutectoid transformation are reviewed from a free energy point of view in order to form a background for an examination of the various treatments of growth during discontinuous precipitation as discussed by the authors.
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On the structure of non-equilibrium high-angle grain boundaries
P. H. Pumphrey,H. Gleiter +1 more
TL;DR: In this paper, the incorporation of lattice dislocations into high-angle grain boundaries either with small radii of curvature or absorbing lattice defects is observed by the in situ heating of thin foils in a transmission electron microscope.