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Compressive behaviour of nanocrystallilne Mg-5%Al alloys

Diao, H., Yan, C., Bell, J.M., Lu, L., Zhang, G.P., Karba, S., Liss, K-D., & Chen, M.W. (2010) Compressive behaviour of nanocrystallilne Mg-5%Al alloys. Advanced Materials and Processing, pp. 231-234.

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Abstract

Magnesium alloys are attracting increasing research interests due to their low density, high specific strength and good mechineability and availability as compared to other structural materials. However, the deformation and failure mechanisms of nanocrystalline Mg alloys have not been well understood. In this work, the deformation behavior of nanocrystalline Mg-5% Al alloys was investigated using compression test, with a focus on the effects of grain size. The average grain size of the Mg-Al alloy was changed from 13 µm to 50 nm via mechanical milling. The results showed that grain size had a significant influence on the yield stress and ductility of the Mg alloys, and the materials exhibited increased strain rate sensitivity with decrease of grain size. The deformation mechanisms were also strongly dependent with the grain sizes.

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ID Code: 38227
Item Type: Journal Article
Additional Information: Proceedings of the 6th International Conference on ICAMP
Keywords: nanocrystalline Mg alloy, texture, strain hardening, deformation mechanism
DOI: 10.1142/9789814322799_0054
ISSN: 0217-9849
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2010 World Scientific Publishing.
Deposited On: 29 Oct 2010 11:45
Last Modified: 23 Oct 2013 13:27

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