An examination of cavity development in an aluminum-6061 metal matrix composite processed by equal-channel angular pressing

Megumi Kawasaki, Yi Huang, Cheng Xu, Minoru Furukawa, Zenji Horita, Terence G. Langdon

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    5 Citations (Scopus)

    Abstract

    An Al-6061 metal matrix composite, reinforced with 10 volume % Al 2O3 particulates having an ultrafine size of ∼270 nm, was subjected to equal-channel angular pressing (ECAP) through one pass at 298 K and an additional 11 passes at a temperature of 473 K. Inspection showed the grain size was reduced from ∼3.5 μm to ∼1.9 μm through ECAP but there was no measurable change in the average size of the particulates. This paper describes the tensile testing of the as-pressed material at a temperature of 873 K and the subsequent examination of the fractured specimens for the presence of internal cavitation. The results demonstrate that a significant number of cavities develop during tensile testing at 873 K and it is shown through quantitative analysis that the majority of these cavities tend to be elongated in the approximate direction of the tensile axis.

    Original languageEnglish
    Title of host publicationUltrafine Grained Materials III
    EditorsY.T. Zhu, T.G. Langdon, R.Z. Valiev, S. Lee Semiatin, al et al
    Pages25-30
    Number of pages6
    Publication statusPublished - 2004
    EventUltrafine Grained Materials III - Charlotte, NC., United States
    Duration: Mar 14 2004Mar 18 2004

    Publication series

    NameUltrafine Grained Materials III

    Other

    OtherUltrafine Grained Materials III
    Country/TerritoryUnited States
    CityCharlotte, NC.
    Period3/14/043/18/04

    All Science Journal Classification (ASJC) codes

    • General Engineering

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