Journal
SCRIPTA MATERIALIA
Volume 48, Issue 8, Pages 1117-1122Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S1359-6462(02)00615-2
Keywords
Mg alloys; superplasticity; grain boundary sliding; electron backscattering diffraction; extrusion
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The surface topography resulting from grain boundary sliding (GBS) in warm-extruded AZ61 sheets was investigated after tensile superplastic loading, and compared with previous examinations on Al base alloys. GBS was observed to prevail from the very initial stage; similar to60% of total strain was contributed by GBS due to the high fraction (88%) of high angle boundaries in AZ61, distinctly different from the case of Al alloys. (C) 2003 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.
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