| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1501543 | Scripta Materialia | 2010 | 4 Pages |
Abstract
Ultrafine-grained (0.6 μm) Al–Mg–Sc alloy with predominant high-angle boundaries was produced by friction stir processing. A superplastic elongation of 210% was obtained at 175 °C, and the optimum strain rate and maximum elongation increased with increasing temperature. Marker lines were scratched on the polished specimen surfaces using a nano-indenter to measure grain boundary sliding (GBS) offsets during deformation, which indicated that the GBS contribution to the strain exceeded 50% at 175 °C and increased with increases in strain and temperature.
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Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
F.C. Liu, Z.Y. Ma,