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Pumice/aluminium syntactic foam

机译:浮石/铝复合泡沫

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摘要

A novel filler material is introduced to produce high strength metal-matrix syntactic foam. Packed beds of pumice particles, a low-cost natural porous volcanic glass, with the size range of 2.8-4 mm were infiltrated with molten aluminium alloy. The resulting syntactic foams were subjected to microstructural observations and chemical analysis. Furthermore, quasi-static compression testing was applied on heat treated samples. The material strength and the deformation mechanism under compressive loading of the pumice particles and foams were investigated. The results indicate that there is a limited chemical reaction between the particles and matrix. The pumice particles considerably enhance the strength of the foam and result in an average plateau stress of 68.25 MPa and specific energy absorption of 24.8 MJ/m~3. Pumice particles show higher strength in the direction of tubular pores. The mechanical anisotropy of pumice particles is likely to cause a slight variation in the directional properties of the foams.
机译:引入一种新型填料来生产高强度的金属基复合泡沫。用熔融铝合金渗入浮石颗粒的填充床,浮石颗粒是低成本的天然多孔火山玻璃,尺寸范围为2.8-4 mm。对所得的句法泡沫进行微观结构观察和化学分析。此外,对热处理过的样品进行了准静态压缩测试。研究了浮石颗粒和泡沫在压缩载荷下的材料强度和变形机理。结果表明,颗粒与基质之间的化学反应有限。浮石颗粒显着提高了泡沫的强度,导致平均平台应力为68.25 MPa,比能量吸收为24.8 MJ / m〜3。浮石颗粒在管状孔的方向上显示出较高的强度。浮石颗粒的机械各向异性可能会导致泡沫的方向性略有变化。

著录项

  • 来源
    《Materials Science and Engineering》 |2015年第21期|102-108|共7页
  • 作者单位

    Centre for Mass and Thermal Transport in Engineering Materials, Department of Mechanical Engineering, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia;

    Centre for Mass and Thermal Transport in Engineering Materials, Department of Mechanical Engineering, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia;

    Centre for Mass and Thermal Transport in Engineering Materials, Department of Mechanical Engineering, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia;

    Centre for Mass and Thermal Transport in Engineering Materials, Department of Mechanical Engineering, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Cellular material; Infiltration; Compression test; Microstructure; Pumice;

    机译:蜂窝状材料;浸润;压缩试验;微观结构浮石;

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