Thermal Expansion of Al Matrix Composites Reinforced with Hybrid Micro-/nano-sized Al2O3 Particles

    Authors

    Z. B. Lei; K. Zhao; Y. G. Wang;L. N. An

    Comments

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    Abbreviated Journal Title

    J. Mater. Sci. Technol.

    Keywords

    Metal-matrix composites (MMCs); Thermal properties; Hybrid particles; SIC/AL COMPOSITES; CERAMIC PARTICLES; COEFFICIENTS; BEHAVIOR; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering

    Abstract

    The thermal expansion behavior of aluminum matrix composites reinforced with hybrid (nanometer and micrometer) Al2O3 particles was measured between 100 and 600 degrees C and compared to theoretical models. The results revealed that the nanoparticle concentration had significant effect on the thermal expansion behavior of the composites. For the composites with lower nanoparticle concentration, their coefficient of thermal expansion (CTE) is determined by a stress relaxation process. While for the composites with higher nanoparticle concentration, their CTE is determined by a percolation process.

    Journal Title

    Journal of Materials Science & Technology

    Volume

    30

    Issue/Number

    1

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    61

    Last Page

    64

    WOS Identifier

    WOS:000329164200010

    ISSN

    1005-0302

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