Preparation and mechanical properties of Fe3Al／Al2O3 nano-／micro-composite
Preparation and mechanical properties of Fe3Al／Al2O3 nano-／micro-composite
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DOI：
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发表时间：
2003
影响因子：
5.2
通讯作者：
尹衍升;龚红宇;范润华;王昕;谭训彦
中科院分区：
文献类型：
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作者：
尹衍升;龚红宇;范润华;王昕;谭训彦
在1 450-1 600℃热加工制备了Fe 3Al纳米颗粒增强Al 2 O3基复合材料，研究了Fe 3Al含量对复合材料致密化的影响，结果表明：复合材料中存在一些细长的Al 2 O3晶粒，Fe 3 Al颗粒主要分布在基体的晶界处，而较小的颗粒则被困在Al 2 O3颗粒内部Fe 3Al纳米粒子的加入提高了Al 2 O3的力学性能，Fe 3Al/Al 2 O3纳米复合材料的最大强度和韧性分别为832 Mpa和7.96 Mpa·m1/2。
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.