Preparation and mechanical properties of Fe3Al／Al2O3 nano-／micro-composite
摘要
Al2O3 matrix composites reinforced with Fe3 Al nano-particles were fabricated by hot processing at 1 450-1 600℃.The effect of Fe3Al content on the densification,mechanical properties and microstructure of the composites was investigated.The results show that some elongated Al2 O3 grains are observed.Fe3 Al particles are mainly situated at grain boundaries of the matrix while smaller particles are trapped within the alumina grains.The addition of Fe3 Al nanoparticles improves the mechanical properties of alumina.The maximum strength and toughness of the Fe3Al/Al2O3 nanocomposites are 832 Mpa and 7.96 Mpa·m1/2,respectively.
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尹衍升, 龚红宇, 范润华, 等. Preparation and mechanical properties of Fe3Al／Al2O3 nano-／micro-composite[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2003.
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