MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
High Strain Rate Superplasticity of Mg Based Composites Fabricated by Friction Stir Processing
C. J. LeeJ. C. Huang
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2006 Volume 47 Issue 11 Pages 2773-2778

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Abstract

The nano-sized SiO2 particles were added into the AZ61 Mg alloys via friction stir processing (FSP) to a volume fraction of 5–10%. After four FSP passes, the 10% composites had uniform dispersion of particles and grain size of 0.8 μm. This composite exhibited high strain rate superplasticity, with a maximum ductility of 470% at 1×10−2 s−1 and 300°C or 454% at 3×10−1 s−1 and 400°C while maintaining fine grains less than 2 μm in size.

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© 2006 The Japan Institute of Metals and Materials
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