3D study of intermetallics and their effect on the corrosion morphology of rheocast aluminium alloy

Beatriz Mingo, R. Arrabal, A. Pardo, E. Matykina, P. Skeldon

    Research output: Contribution to journalArticlepeer-review

    Abstract

    In the present study, the effect of heat treatment T6.1 on the microstructure and corrosion behaviour of rheocast aluminium alloy A356 is investigated on the basis of 2D/3D characterization techniques and electrochemical and SKPFM measurements. Heat treatment strengthens the α-Al matrix, modifies the intermetallic particles and spheroidizes eutectic Si. These changes do not modify significantly the corrosion behaviour of the alloy. 3D SEM-Tomography clearly shows that the corrosion advances in the shape of narrow paths between closely spaced intermetallics without a major influence of eutectic Si.

    Original languageEnglish
    Pages (from-to)122-128
    Number of pages7
    JournalMaterials Characterization
    Volume112
    Early online date10 Dec 2015
    DOIs
    Publication statusPublished - 1 Feb 2016

    Keywords

    • 3D
    • Aluminium
    • Corrosion
    • Heat treatment
    • Rheocast
    • Tomography

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