Section-dependent microstructure and mechanical properties of rapidly solidified and extruded Al-20Si alloy

    Authors

    S. J. Hong; C. Suryanarayana;B. S. Chun

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Mater. Res. Bull.

    Keywords

    alloys; metals; X-ray diffraction; microstructure; optical properties; ALUMINUM SILICON ALLOY; AL-SI ALLOYS; WEAR; Materials Science, Multidisciplinary

    Abstract

    The microstructure and mechanical properties of rapidly solidified and extruded Al-20Si alloys were studied by a combination of optical microscopy, scanning electron microscopy, X-ray diffraction, compression testing, and wear testing. The microstructure of the extruded bars showed a homogeneous distribution of different primary Si sizes and shapes embedded in the Al matrix depending on the section considered in the extruded bar. As the section changes from diagonal through perpendicular to parallel, the compressive yield strength increased from 219 through 225 to 263 MPa, respectively. The specific wear was the lowest at all sliding speeds for the parallel section in comparison to the perpendicular and diagonal sections of the extruded bar. (C) 2003 Elsevier Ltd. All rights reserved.

    Journal Title

    Materials Research Bulletin

    Volume

    39

    Issue/Number

    3

    Publication Date

    1-1-2004

    Document Type

    Article

    Language

    English

    First Page

    465

    Last Page

    474

    WOS Identifier

    WOS:000189322500014

    ISSN

    0025-5408

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