R
R. A. Verrall
Researcher at Harvard University
Publications - 3
Citations - 1645
R. A. Verrall is an academic researcher from Harvard University. The author has contributed to research in topics: Creep & Superplasticity. The author has an hindex of 3, co-authored 3 publications receiving 1581 citations.
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Journal ArticleDOI
Diffusion-accommodated flow and superplasticity
M.F. Ashby,R. A. Verrall +1 more
TL;DR: In this article, a new mechanism for superplastic deformation is described and modelled, which differs fundamentally from Nabarro-Herring and Coble creep in a topological sense: grains switch their neighbors and do not elongate significantly.
Journal ArticleDOI
Interface controlled diffusional creep
TL;DR: In this article, the authors derived expressions for the rate of diffusional flow when the density of sinks and sources becomes small and when their mobility is limited by impurities, solutes, or precipitates.
Journal ArticleDOI
Application of bound theorems for creeping solids and their application to large strain diffusional flow
TL;DR: In this article, the exact calculation of the rate at which polycrystalline solids creep by grain-neighbour switching is difficult because the strains are large and the changes of grain geometry are considerable.