Journal ArticleDOI
Diffusion-controlled sliding at a serrated grain boundary
About:
This article is published in Scripta Metallurgica.The article was published on 1970-09-01. It has received 49 citations till now. The article focuses on the topics: Grain boundary strengthening & Grain boundary.read more
Citations
More filters
Journal ArticleDOI
On grain boundary sliding and diffusional creep
Rishi Raj,M.F. Ashby +1 more
TL;DR: In this paper, the problem of sliding at a nonplanar grain boundary is considered in detail, and the results give solutions to the following problems: 1) How much sliding occurs in a polycrystal when neither diffusive flow nor dislocation motion is possible? 2) What is the sliding rate at a wavy or stepped grain boundary when diffusional flow of matter occurs? 3) How is the rate of diffusional creep in polycrystals in which grain boundaries slide? 4) how is this creep rate affected by grain shape, and grain boundary migration? 5)
Journal ArticleDOI
The influence of grain boundaries on mechanical properties
TL;DR: The effect of interfaces on mechanical properties is considered in this paper, with emphasis on dislocation mechanisms and the atomic scale structure of boundaries, and Elastic and plastic compatibilities at boundaries are treated.
Journal ArticleDOI
The rate controlling mechanism in superplasticity
TL;DR: In this paper, a model for superplastic deformation is proposed that is based on grain boundary sliding and is controlled by the rate of deformation of the grain interior, and a comparison is made of the proposed model and the various creep mechanisms in order to reveal the ranges of conditions over which each mechanism predominates and how the various mechanisms are related one to another.
Journal ArticleDOI
Review: Overcoming the paradox of strength and ductility in ultrafine-grained materials at low temperatures
TL;DR: In this article, the so-called paradox of strength and ductility of UFG materials is examined and a new quantitative diagram is presented which permits the easy insertion of experimental data.
Journal ArticleDOI
Misorientation dependence of grain boundary sliding in 〈1010〉 tilt zinc bicrystals
TL;DR: In this article, the misorientation dependence of grain boundary sliding and effects of grain boundaries structure and crystal deformation on sliding have been studied by experiments using 〈1010〉 tilt zinc bicrystals with different misorientations.
References
More filters
Journal ArticleDOI
Mechanism for “Viscous” Grain-boundary Sliding
R. C. Gifkins,K. U. Snowden +1 more
TL;DR: Theories of diffusional creep, using either the Nabarro-herring (NH) mechanism based on lattice self-diffusion or Coble's variation involving grain-boundary selfdiffusion, do not always give strain rates as high as those obtained experimentally as mentioned in this paper.