Journal
ACTA MATERIALIA
Volume 53, Issue 7, Pages 2049-2057Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2005.01.016
Keywords
grain boundary; triple junction; mobility; von Neumann-Mullins relation; grain growth
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The motion and geometry of connected 2D grain boundary systems with triple junctions in aluminium was investigated in situ in an SEM with a specially designed heating stage. The results show that triple junctions can have a marked influence on grain boundary motion and grain growth. kinetics. The grain area change with annealing time was recorded in situ in the SEM. An analysis of the experimental data reveals that there is no unique relationship between growth rate and the number it of grain sides (von NeumannMullins relation). This is attributed to the effect of triple junction drag on grain growth. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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