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Effect of thermal cycling on the expansion behavior of Al/SiCp composite
Authors:Na Chen  Hongxiang Zhang  Mingyuan Gu  Yanping Jin
Affiliation:1. State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China;2. School of Materials Science & Engineering, Nanyang Technological University, BLK N4.1, Nanyang Avenue, Singapore 639798, Singapore;1. Forschungs-Neutronenquelle Heinz Maier-Leibnitz (FRM II), TU München, Lichtenbergstraße 1, 85747 Garching, Germany;2. Lloyd''s Register, EMEA, Business Area Energy, Opernring 1, 1010 Vienna, Austria;3. Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, CZ-121 16 Prague 2, Czech Republic;4. Service Center for Electron Microscopy (USTEM), Technische Universität Wien, Wiedner Hauptstraße 8, 1040 Vienna, Austria;5. Helmholtz Zentrum Berlin, Wannsee, Hahn Meitner Platz 1, 14109 Berlin, Germany;6. Institute for Applied Materials, Karlsruhe Institute of Technology, Kaiserstraße 12, 76131 Karlsruhe, Germany;1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;2. State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China;3. Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
Abstract:The coefficient of thermal expansion (CTE) and accumulated plastic strain of the pure aluminum matrix composite containing 50% SiC particles (Al/SiCp) during thermal cycling (within temperature range 298–573 K) were investigated. The composite was produced by infiltrating liquid aluminum into a preform made by SiC particles with an average diameter of 14 μm. Experiment results showed that the relationship between the CTE of Al/SiCp and temperature is nonlinear; CTE could reach a maximum value at about 530 K. The theoretical accumulated plastic strain of Al/SiCp composites during thermal cycling has also been calculated and compared with the experimental results.
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