Investigation of the microstructure and the influence of iron on the formation of Al8Mn5 particles in twin roll cast AZ31 magnesium alloy

JOURNAL OF ALLOYS AND COMPOUNDS

卷:628

Article

Pawar, S.¹  Zhou, X.¹  Hashimoto, T.¹  Thompson, G. E.¹  Scamans, G.^2,3  Fan, Z.² 

[1] Univ Manchester, Sch Mat, Manchester M13 9PL, Lancs, England

[2] Brunel Univ, BCAST, Uxbridge UB8 3PH, Middx, England

[3] Innoval Technol Ltd, Banbury OX16 1TQ, Oxon, England

关键词: AZ31;    Magnesium alloys;    Transmission electron microscopy (TEM);    Iron;    Intermetallics;   

DOI  :  10.1016/j.jallcom.2014.12.028

来源: Elsevier

【 摘 要 】

The influence of iron on the formation of Al8Mn5 particles during twin roll casting of AZ31 magnesium alloy and the alloy microstructure has been investigated. Flower-shaped Al8Mn5 particles with sizes of 50-500 nm were observed at the grain centres and the grain boundaries. Additionally, Fe-particles with faceted morphologies and dimensions of less than 100 nm were observed at the centres of the Al8Mn5 particles, suggesting that the alpha-Fe particles acted as effective nucleation sites for the Al8Mn5 particles. (C) 2014 The Authors. Published by Elsevier B.V.

【 授权许可】

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