Time-resolved synchrotron tomographic quantification of deformation-induced flow in a semi-solid equiaxed dendritic Al-Cu alloy

SCRIPTA MATERIALIA

卷:103

Article

Cai, B.^1,2  Karagadde, S.^1,2  Rowley, D.^1,2  Marrow, T. J.³  Connolley, T.⁴  Lee, P. D.^1,2 

[1] Univ Manchester, Sch Mat, Manchester, Lancs, England

[2] Rutherford Appleton Lab, Res Complex Harwell, Harwell, Oxon, England

[3] Univ Oxford, Dept Mat, Oxford OX1 3PH, England

[4] Diamond Light Source Ltd, Didcot, Oxon, England

关键词: Semi-solid deformation;    Segregation;    Liquid flow;    X-ray tomography;   

DOI  :  10.1016/j.scriptamat.2015.03.011

来源: Elsevier

【 摘 要 】

The rheology of semi-solid alloys has been studied by a novel in situ tomographic technique. Via extruding an equiaxed Al-15 wt.%Cu alloy, the inhomogeneous coherent compression of the alpha-Al grains was quantified, including the interdendritic channel closure and formation of a liquid extrudate. This investigation not only provides important insights into the microstructural changes occurring during semi-solid deformation, but also offers a validation benchmark for segregation and rheological models. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd.

【 授权许可】

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