3D characterisation of the Fe-rich intermetallic phases in recycled Al alloys by synchrotron X-ray microtomography and skeletonisation

SCRIPTA MATERIALIA

卷:146

Article

Zhao, Y.^1,2  Du, W.²  Koe, B.^2,3  Connolley, T.³  Irvine, S.³  Allan, P. K.³  Schleputz, C. M.⁴  Zhang, W.¹  Wang, F.⁵  Eskin, D. G.⁵  Mi, J.² 

[1] South China Univ Technol, Natl Engn Res Ctr Near Net Shape Forming Metall M, Guangzhou 510641, Guangdong, Peoples R China

[2] Univ Hull, Sch Engn & Comp Sci, Kingston Upon Hull HU6 7RX, East Yorkshire, England

[3] Diamond Light Source, Harwell Sci & Innovat Campus, Didcot OX11 0DE, Oxon, England

[4] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

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

关键词: Synchrotron X-ray tomography;    Skeletonisation analysis;    Fe-rich intermetallic phases;    Aluminium alloys;    Solidification;   

DOI  :  10.1016/j.scriptamat.2017.12.010

来源: Elsevier

【 摘 要 】

Synchrotron X-ray microtomography and skeletonisation method were used to study the true 3D network structures and morphologies of the Fe-rich intermetallic phases in recycled Al-5.0%Cu-0.6%Mn alloys with 0.5% and 1.0% Fe. It was found that, the Fe-phases in the 1.0%Fe alloy have node lengths of 5-25 pm; while those in the 0.5%Fe alloy are of 3-17 pm. The Fe-phases in the 1.0%Fe alloy also developed sharper mean curvature with wider distribution than those in the 0.5%Fe alloy. Combining SEM studies of the deeply-etched samples, the true 3D structures of 4 different type Fe phases in both alloys are also revealed and demonstrated. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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