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Compressive behaviour of nanocrystalline Mg-5Al alloys

Diao, H., Yan, C., Bell, J.M., Lu, L., Zhang, G.P., Kabra, S., Liss, K.D., & Chen, M.W. (2012) Compressive behaviour of nanocrystalline Mg-5Al alloys. Materials Technology, 27(1), pp. 85-87.

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          Abstract

          Magnesium alloys are attracting increasing research interests due to their low density, high specific strength, good machinability and availability as compared to other structural materials. However, the deformation and failure mechanisms of nanocrystalline (nc) Mg alloys have not been well understood. In this work, the deformation behaviour of nc Mg-5Al alloys was investigated using compression test, with focus on the effects of grain size. The average grain size of the Mg- Al alloy was changed from 13 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 a decrease in grain size. The deformation mechanisms were also strongly dependent on the grain sizes.

          Impact and interest:

          3 citations in Scopus
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          4 citations in Web of Science®

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          ID Code: 52690
          Item Type: Journal Article
          Keywords: Deformation mechanism, Nanocrystalline Mg alloy, Strain hardening, Strain rate sensitivity, Texture, Al alloys, Average grain size, Compression tests, Deformation and failure mechanism, Deformation behaviour, Grain size, High specific strength, Low density, Mechanical milling, Mg alloy, Nanocrystallines, Aluminum, Cerium alloys, Compression testing, Deformation, Grain size and shape, Magnesium alloys, Mechanical alloying, Strain rate, Strength of materials, Textures, Nanocrystalline alloys
          DOI: 10.1179/175355511x13240279340688
          ISSN: 1066-7857
          Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
          Current > Schools > School of Clinical Sciences
          Current > QUT Faculties and Divisions > Science & Engineering Faculty
          Copyright Owner: Copyright 2012 W. S. Maney & Son Ltd.
          Deposited On: 24 Jul 2012 12:01
          Last Modified: 28 Jul 2012 16:57

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