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首页> 外文期刊>Materials Science and Engineering >Tensile properties and thermal stability of ZnO-coated aluminum borate whiskers reinforced 2024A1 composite
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Tensile properties and thermal stability of ZnO-coated aluminum borate whiskers reinforced 2024A1 composite

机译：ZnO包覆的硼酸铝晶须增强的2024A1复合材料的拉伸性能和热稳定性

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摘要

ZnO-coated aluminum borate whiskers reinforced 2024AI composite was fabricated by squeeze casting. Interfacial microstructures and tensile properties of the composite in as-cast and after thermal exposure were investigated. Fracture mechanisms of the composite in as-cast and after thermal exposure were also investigated. The results show that ZnO coating of the whiskers reacts with molten 2024AI and MgAl_2O_4 forms at the interface during squeeze casting. On the one hand, the interfacial reaction between ZnO and 2024A1 can improve the wettability of the whiskers by molten 2024A1, increasing the tensile properties of as-cast composite. On the other hand, during thermal exposure, MgAl_2O_4 at the interface can effectively hinder serious interfacial reactions between the whiskers and magnesium in the matrix of 2024A1, improving the thermal stability of the composite at high temperatures.
机译：采用挤压铸造法制备了ZnO包覆的硼酸铝晶须增强的2024AI复合材料。研究了铸态和热暴露后复合材料的界面微观结构和拉伸性能。还研究了复合材料在铸态和热暴露后的断裂机理。结果表明，在挤压铸造过程中，晶须的ZnO涂层与熔融的2024Al反应，并且在界面处形成MgAl_2O_4。一方面，ZnO与2024A1之间的界面反应可以改善熔融2024A1对晶须的润湿性，从而提高铸态复合材料的拉伸性能。另一方面，在热暴露期间，界面处的MgAl_2O_4可以有效地阻止晶须与2024A1基质中的镁之间的严重界面反应，从而改善了复合材料在高温下的热稳定性。

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  • 来源
    《Materials Science and Engineering》 |2011年第6期|p.2407-2411|共5页
  • 作者

    H.Y. Yue; E.J. Guo; W.D. Fei; LP. Wang;

  • 作者单位

    School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, People's Republic of China;

    School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, People's Republic of China;

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 15000 J, People's Republic of China;

    School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    composites; ZnO coating; tensile properties; thermal stability; interface;

    机译：复合材料ZnO涂层;拉伸性能热稳定性;接口;

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