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首页> 外文期刊>Materials science forum >Preparation and Squeeze Casting of Nano-SiC_P/A356 Composite Assisted with Ultrasonic Vibration Process
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Preparation and Squeeze Casting of Nano-SiC_P/A356 Composite Assisted with Ultrasonic Vibration Process

机译：超声振动辅助纳米SiC_P / A356复合材料的制备及挤压铸造

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摘要

Metal matrix nano-composites (MMNCs) have excited great interest in recent years, due to their very good properties. In this work, an efficient process by combining high-energy ball milling (HBM) with ultrasonic vibration (UV) was employed to prepare MMNCs. The composite granules containing nano-SiC-p were produced by milling the nano-SiC and Al powders, and then were remelted in the matrix melt and treated by UV to prepare MMNCs. The MMNCs were finally formed by squeeze casting. The results indicate that globular nano-SiC_P/Al compound granules with diameters between 1.5-2mm are obtained by dry HBM, and the nano-SiC particles are uniformly distributed in the granules. After remelting, nano-SiC particles in compound granules release in the matrix melt and are uniformly dispersed by UV within 2min. In MMNCs, nano-SiC particles concentrate mainly around eutectic phases, but no agglomeration is observed. The tensile strength of the MMNCs with 1wt.% nano-SiCp is increased by 19%, compared to the matrix A356 alloy.
机译：近年来，金属基纳米复合材料（MMNC）具有非常好的性能，引起了人们的极大兴趣。在这项工作中，结合了高能球磨（HBM）和超声振动（UV）的有效工艺被用于制备MMNC。通过研磨纳米SiC和Al粉末来制备含有纳米SiC-p的复合颗粒，然后在基质熔体中将其重熔并通过UV处理以制备MMNC。最终通过挤压铸造形成MMNC。结果表明，采用干式HBM法制备了直径在1.5-2mm之间的球形纳米SiC_P / Al复合颗粒，纳米SiC颗粒均匀分布在颗粒中。重熔后，复合颗粒中的纳米SiC颗粒在基体熔体中释放，并在2分钟内被紫外线均匀分散。在MMNC中，纳米SiC颗粒主要集中在共晶相周围，但未观察到团聚。与基体A356合金相比，具有1wt。％纳米SiCp的MMNC的拉伸强度提高了19％。

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  • 来源
    《Materials science forum》 |2017年第2期|1188-1193|共6页
  • 作者

    Shulin Lue; Pan Xiao; Shusen Wu; Xiaogang Fang;

  • 作者单位

    State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, China;

    State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, China;

    State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, China;

    State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Al matrix nano-composites; Ultrasonic vibration; High-energy ball milling; Nano-SiC particles; Mechanical properties;

    机译：铝基纳米复合材料;超声波振动;高能球磨;纳米SiC颗粒;机械性能;

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