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Enhanced superplasticity and diffusional creep in ultrafine-grained Mg-6Al-1Zn alloy with high thermal stability
- Authors
- Kim, W. J.; Park, I. B.
- Issue Date
- Feb-2013
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Severe plastic deformation; Magnesium alloys; Superplasticity; Grain refining; Ultrafine-grained microstructure
- Citation
- SCRIPTA MATERIALIA, v.68, no.3-4, pp.179 - 182
- Journal Title
- SCRIPTA MATERIALIA
- Volume
- 68
- Number
- 3-4
- Start Page
- 179
- End Page
- 182
- ISSN
- 1359-6462
- Abstract
- Ultrafine-grained Mg-6Al-1Zn alloys, which have beta-Mg17Al12 70-140 nm particles preferentially located at the grain boundaries, exhibited excellent thermal stability and superplasticity at high temperatures. Diffusional creep (Coble creep), which has rarely been reported in other ultrafine-grained Mg alloys and composites, becomes dominant over the grain boundary sliding mechanism at strain rates near 10(-4) s(-1) 523-573 K. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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Related Researcher
- Kim, Woo Jin
- Graduate School (Department of Materials Science and Engineering)