Particle stabilization of plastic flow in nanostructured Al-1 %Si Alloy

Tianlin Huang, Chao Li, Guilin Wu, Tianbo Yu, Qing Liu, Niels Hansen, Xiaoxu Huang

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    A nanostructured Al-1 %Si alloy containing a dispersion of Si particles in ultrapure aluminum (99.9996 %) was produced by heavy cold rolling to study the effect of second-phase particles on the occurrence of plastic instability during tensile testing of a nanostructured metal. Tensile tests were conducted on the as-deformed sample and on samples after recovery annealing treatments. Work hardening and strain rate sensitivity were studied by tensile test at different strain rates, and deformed and annealed samples were characterized by transmission electron microscopy. By comparing the observed behavior with that of nanostructured commercial purity Al, a significant increase in the tensile elongation was found. This is related to a homogenization of the deformation microstructure due to the presence of finely dispersed Si particles. As a result localized deformation is reduced and tensile ductility increased.
    Original languageEnglish
    JournalJournal of Materials Science
    Volume49
    Issue number19
    Pages (from-to)6667-6673
    ISSN0022-2461
    DOIs
    Publication statusPublished - 2014

    Fingerprint

    Dive into the research topics of 'Particle stabilization of plastic flow in nanostructured Al-1 %Si Alloy'. Together they form a unique fingerprint.

    Cite this