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Consolidation of aluminum-based metal matrix composites via spark plasma sintering

机译：通过火花等离子体烧结固结铝基金属基复合材料

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摘要

Aluminum-based metal matrix composite (MMC) materials containing SiC, AlN, Si_3N_4 or BN were processed by spark plasma sintering (SPS). Ceramic powder type, size and content were investigated to determine their effect on sinter quality. SiC, AlN and Si_3N_4 proved to be amenable to this style of processing whereas all systems containing BN were not. Full densification of MMCs that incorporated finer ceramic particles was problematic due to the presence of ceramic clusters and the extent to which aluminum could be forced into these regions. MMCs that incorporated coarser ceramic particles were more easily densified, but their hardness benefits were inferior. Three point bend tests proved to be an effective tool in determining the relative sinter quality of MMC systems. SiC outperformed AlN MMC samples in bend tests. Excellent ductility and bend strength was developed at low temperatures, while equivalent AlN-bearing materials required significantly higher temperatures to achieve comparable properties.
机译：通过火花等离子体烧结（SPS）对包含SiC，AlN，Si_3N_4或BN的铝基金属基复合材料（MMC）进行处理。研究了陶瓷粉末的类型，大小和含量，以确定它们对烧结质量的影响。事实证明，SiC，AlN和Si_3N_4适用于这种处理方式，而所有含BN的系统均不适用。由于陶瓷团簇的存在以及铝被迫进入这些区域的程度，掺入更细陶瓷颗粒的MMC的完全致密化是有问题的。包含较粗陶瓷颗粒的MMC较易致密，但其硬度优势较差。三点弯曲测试被证明是确定MM​​C系统相对烧结质量的有效工具。在弯曲测试中，SiC的性能优于AlN MMC样品。在低温下具有出色的延展性和弯曲强度，而等效的含AlN的材料需要明显更高的温度才能达到可比的性能。

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  • 来源
    《Materials Science and Engineering》 |2015年第11期|123-133|共11页
  • 作者

    G.A. Sweet; M. Brochu; R.L. Hexemer Jr.; I.W. Donaldson; D.P. Bishop;

  • 作者单位

    Dalhousie University, Department of Process Engineering and Applied Science, 1360 Barrington Street., Halifax, Nova Scotia, Canada B3J 1Z1;

    McGill University, Mining and Materials Engineering Department, 3610 University St., Montreal, Quebec, Canada H3A 0C5;

    GKN Powder Metallurgy, 2200N, Opdyke Road, Auburn Hills 48326, USA;

    GKN Powder Metallurgy, 2200N, Opdyke Road, Auburn Hills 48326, USA;

    Dalhousie University, Department of Process Engineering and Applied Science, 1360 Barrington Street., Halifax, Nova Scotia, Canada B3J 1Z1;

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  • 正文语种 eng
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  • 关键词

    Mechanical characterization; Aluminum alloys; Composites; Powder metallurgy;

    机译：机械特性铝合金;复合材料;粉末冶金;

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