Journal
SCRIPTA MATERIALIA
Volume 59, Issue 3, Pages 356-359Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2008.04.003
Keywords
friction stir processing; magnesium alloy; nanograined microstructure; microhardness
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Nanograined structures with an average grain size of similar to 85 nm have been achieved in solution hardened AZ31 magnesium alloy by two-pass friction stir processing under rapid heat sink in which the second pass has a lower heat input. The mean hardness of the nanograined region reaches similar to 1.5 GPa (or 150 H-v), about three times that of the matrix. The evolution of the nanograined structure is also investigated. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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