Effect of clustering on the mechanical properties of SiC particulate-reinforced aluminum alloy 2024 metal matrix composites

    Authors

    S. J. Hong; H. M. Kim; D. Huh; C. Suryanarayana;B. S. Chun

    Comments

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    Abbreviated Journal Title

    Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.

    Keywords

    composites; clustering; mechanical properties; fractography; Al 2024; alloy; BEHAVIOR; SIZE; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering

    Abstract

    Al 2024-SiC metal matrix composite (MMC) powders produced by centrifugal atomization were hot extruded to investigate the effect of clustering on their mechanical properties. Fracture toughness and tension tests were conducted on specimens reinforced with different volume fractions of SiC. A model was proposed to suggest that the strength of the MMCs could be estimated from the load transfer model approach that takes into consideration the extent of clustering. This model has been successful in predicting the experimentally observed strength and fracture toughness values of the Al 2024-SiC MMCs. On the basis of experimental observations, it is suggested that the strength of particulate-reinforced MMCs may be calculated from the relation: sigma(y) = sigma(m)V(m) + sigma(r) (V-r - V-c) - sigma(r)V(c), where sigma and V represent the yield strength and volume fraction, respectively, and the subscripts m, r, and c represent the matrix, reinforcement, and clusters, respectively. (C) 2002 Elsevier Science B.V. All rights reserved.

    Journal Title

    Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing

    Volume

    347

    Issue/Number

    1-2

    Publication Date

    1-1-2003

    Document Type

    Article

    Language

    English

    First Page

    198

    Last Page

    204

    WOS Identifier

    WOS:000181116400023

    ISSN

    0921-5093

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