Globule-globule interactions during deformation in semi-solid Al-Cu using time-resolved X-ray tomography

K. M. Kareh, P. D. Lee, C. M. Gourlay

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    Optimising semi-solid processing and accurately modelling semi-solid deformation requires a fundamental understanding of the globule-scale mechanisms that cause the macroscopic rheological response. In this work, apparatus and analysis techniques are being developed for the time-resolved, three-dimensional imaging of semi-solid alloy deformation. This paper overviews synchrotron X-ray tomography results on globular Al-15wt%Cu deformed at 0.7 solid fraction using extrusion. The globule-globule interactions in response to load were quantified in terms of the response of individual globules with respect to globule translation, rotation, and deformation. The potential of time-resolved X-ray tomography in the study of semi-solid alloy deformation is then discussed. © (2013) Trans Tech Publications, Switzerland.

    Keywords

    • Globule interaction
    • In situ dynamic deformation
    • Semi-solid extrusion
    • Synchrotron x-ray tomography

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