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Microstructure and mechanical properties of aluminum alloy matrix composites reinforced with Fe-based metallic glass particles

机译：铁基金属玻璃颗粒增强铝合金基复合材料的组织和力学性能

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摘要

Fe-based metallic glass (FMG) particles reinforced Al-2024 matrix composites were fabricated by using the powder metallurgy method successfully. Mechanical alloying result in nanostructured Al-2024 matrix with a grain size of about 30 nm together with a good distribution of the FMG particles in the Al matrix. The consolidation of the composites was performed at a temperature in the super-cooled liquid region of the FMG particles, where the FMG particles act as a soft liquid-like binder, resulting in composites with low or zero porosity. The microstructure and mechanical properties of the composites were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and compression test. The yield and fracture strength of the composites are 403 MPa and 660 MPa, respectively, while retaining a considerable fracture deformation of about 12%. The strengthening mechanism is associated with the grain refinement of the matrix and uniform distribution of the FMG particles.
机译：采用粉末冶金方法成功地制备了铁基金属玻璃（FMG）颗粒增强Al-2024基复合材料。机械合金化导致纳米结构的Al-2024基体具有约30 nm的晶粒尺寸以及FMG颗粒在Al基体中的良好分布。复合材料的固结是在FMG颗粒的过冷液体区域内的温度下进行的，在该温度下FMG颗粒充当柔软的类液体粘合剂，从而导致孔隙率低或为零。通过X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM）和压缩试验研究了复合材料的微观结构和力学性能。复合材料的屈服强度和断裂强度分别为403 MPa和660 MPa，同时保留了约12％的相当大的断裂变形。强化机制与基体的晶粒细化和FMG颗粒的均匀分布有关。

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  • 来源
    《Materials & design》 |2014年第1期|512-518|共7页
  • 作者

    Ruixiao Zheng; Han Yang; Tong Liu; Kei Ameyama; Chaoli Ma;

  • 作者单位

    Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Material Science and Engineering, Beihang University, Beijing 100191, China;

    Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Material Science and Engineering, Beihang University, Beijing 100191, China;

    Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Material Science and Engineering, Beihang University, Beijing 100191, China;

    Department of Mechanical Engineering, Faculty of Science and Engineering, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan;

    Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Material Science and Engineering, Beihang University, Beijing 100191, China;

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  • 正文语种 eng
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  • 关键词

    Metal matrix composites; Fe-based metallic glass; Microstructure; Mechanical properties;

    机译：金属基复合材料;铁基金属玻璃;微观结构机械性能;

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