Interactive Resource icon  Pinning of Grain Boundaries and Zener Drag

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Description: A dispersion of particles may retard the motion of a grain boundary by a process called Zener Drag. Large (> 0.1 μm) incoherent precipitates have a large particle-interface energy. If present at a grain boundary, they will lower their interface energy and the boundary energy. To move the boundary past a particle a force has to be exerted which is related to the size of the particle and the energy of the boundary. This interactive animation schematically presents the process of pinning of grain boundaries and Zener drag.
Keywords: recrystallisation • grain boundary • pinning • Zener drag
Categories: Science approaches > Strengthening mechanisms > Recovery, recrystallisation & grain growth
Materials > Metals & alloys > Aluminium & alloys
Created by: Havovy Cama, Innoval Technology Ltd (formerly Alcan Intl. Ltd, Banbury)
MATTER, The University of Liverpool
Contributions: Ricky Ricks, Innoval Technology Ltd (formerly Alcan Intl. Ltd, Banbury)
Richard Hamerton, Alcan International Ltd
John Humphreys, Manchester Materials Science Centre
Published by: European Aluminium Association, Brussels
License: This resource is released under the Creative Commons Attribution Non-Commercial No Derivatives license (2.0 UK: England & Wales).
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Date created: 15 April 2003
Date added: 21 December 2009
Resource ID: 2631