Title

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

Authors

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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