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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Characterization of aluminium matrix composites reinforced by Al-Cu-Fe quasicrystalline particles
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Characterization of aluminium matrix composites reinforced by Al-Cu-Fe quasicrystalline particles

机译：Al-Cu-Fe准晶颗粒增强的铝基复合材料的表征

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摘要

Aluminium matrix composites were consolidated from elemental Al powder and atomised Al65Cu20Fe15 particles by vacuum hot pressing technique. The spherical Al65Cu20Fe15 particles consisted of icosahedral quasicrystalline dendrites or cells and cubic tau-AlCu(Fe) phase located in interdendritic areas. The composites with different content of the reinforcement particles (20, 40 and 60 wt%) were prepared. All composites showed density about 99% and a good bonding between the Al65Cu20Fe15 particles and the matrix. It was shown that the phase composition of the atomised particles did not change after consolidation for the composite containing 20% and 40% added particles while Al2Cu precipitates formed at the Al/Al65Cu20Fe15 interfaces and inside the matrix in the composite with 60% of Al65Cu20Fe15 particles. With the increase of the volume fraction of the reinforcement in the composite the hardness as well as compressive strength increased reaching the value of 173 HV0.5 and 370 MPa, respectively for 60% of Al65Cu20Fe15 particles. The friction coefficient slightly varied in the range 0.5-0.7 depending on the composition. (C) 2015 Elsevier B.V. All rights reserved.
机译：铝基复合材料通过真空热压技术由元素铝粉和雾化的Al65Cu20Fe15颗粒固结。球形Al65Cu20Fe15颗粒由二十面体准晶树枝状或晶胞和位于树突间区域的立方tau-AlCu（Fe）相组成。制备具有不同含量的增强颗粒（20、40和60wt％）的复合材料。所有复合材料均显示出约99％的密度，并且Al65Cu20Fe15颗粒与基体之间具有良好的结合。结果表明，对于固含量为20％和40％的复合材料，固结后雾化颗粒的相组成没有变化，而在60％Al65Cu20Fe15颗粒的复合材料中，Al / Cu沉淀形成在Al / Al65Cu20Fe15界面和基体内部。随着复合物中增强材料体积分数的增加，60％的Al65Cu20Fe15颗粒的硬度和抗压强度分别达到173 HV0.5和370 MPa。摩擦系数根据组成在0.5-0.7的范围内略有变化。 （C）2015 Elsevier B.V.保留所有权利。

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