Abstract Thermal expansion behavior of an interpenetrating metal/ceramic composite having ceramic contents in the range of 34−60 vol.% is studied in this work. Four thermal cycles were carried out between room temperature and 500 °C at a constant heating/cooling rate of 5 °C/min. Both thermal strain and thermal expansion coefficient decrease with increasing ceramic content in the composite. Evolution of the thermal expansion coefficient with temperature shows anisotropic nature. At all ceramic contents, highest thermal strain and thermal expansion coefficient are obtained along the preform press direction. The extent of thermal expansion anisotropy depends upon both temperature and ceramic content in the composite. The evolution of the observed thermal expansion anisotropy has been attributed to the elastic anisotropy of the preforms and composites, considering as well the elastic-plastic flow behavior of the metallic matrix. The results have been compared with several analytical theoretical models.

中文翻译：

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互穿金属/陶瓷复合材料的各向异性热膨胀行为

摘要 本工作研究了陶瓷含量在 34-60 vol.% 范围内的互穿金属/陶瓷复合材料的热膨胀行为。在室温和 500 °C 之间以 5 °C/min 的恒定加热/冷却速率进行四次热循环。热应变和热膨胀系数都随着复合材料中陶瓷含量的增加而降低。热膨胀系数随温度的演变表现出各向异性。在所有陶瓷含量下，沿预成型件压制方向获得最高的热应变和热膨胀系数。热膨胀各向异性的程度取决于温度和复合材料中的陶瓷含量。观察到的热膨胀各向异性的演变归因于预制件和复合材料的弹性各向异性，以及金属基体的弹塑性流动行为。结果已与几种分析理论模型进行了比较。