Grain boundary sliding revisited: developments in sliding over four decades

Langdon, Terence G. (2006) Grain boundary sliding revisited: developments in sliding over four decades Journal of Materials Science, 41, (3), pp. 597-609. (doi:10.1007/s10853-006-6476-0).


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It is now recognized that grain boundary sliding (GBS) is often an important mode of deformation in polycrystalline materials. This paper reviews the developments in GBS over the last four decades including the procedures available for estimating the strain contributed by sliding to the total strain, ?, and the division into Rachinger GBS in conventional creep and Lifshitz GBS in diffusion creep. It is shown that Rachinger GBS occurs under two distinct conditions in conventional creep depending upon whether the grain size, d, is larger or smaller than the equilibrium subgrain size, ?. A unified model is presented leading to separate rate equations for Rachinger GBS in power-law creep and superplasticity. It is demonstrated that these two equations are in excellent agreement with experimental observations. There are additional recent predictions, not fully resolved at the present time, concerning the role of GBS in nanostructured materials.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1007/s10853-006-6476-0
Additional Information: 40th anniversary issue, guest editor M. Grant Norton
ISSNs: 0022-2461 (print)
Organisations: Engineering Mats & Surface Engineerg Gp
ePrint ID: 43644
Date :
Date Event
Date Deposited: 29 Jan 2007
Last Modified: 16 Apr 2017 18:48
Further Information:Google Scholar

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