Al-Cu-Fe-Cr准晶增强铝基复合材料的研究

doi:10.11896/j.issn.1005-023X.2018.15.014

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Abstract The Al-Cu-Fe-Cr quasicrystalline were prepared by conventional casting method. The microstructures and the phase transition after heat treatment of quasicrystalline and other similar phases were characterisied by XRD, SEM and TEM. The alumi-nium-based composites were fabricated by using the Al-Cu-Fe-Cr quasicrystalline particles as reinforcing phase and ZL101 as matrix with mechanical stirring. The microstructures and compositions of the composites were analyzed and its mechanical properties were studied. The results show that the as-cast quasicrystalline material was composed of Al₆₅Cu₂₀Fe₁₀Cr₅(I+d), quasicrystalline I, λ-Al₃Fe, and a small amount of η-AlCu, θ-Al₂Cu phases, after heat treatment at 800 ℃ for 6 h, λ phase trend to transform into I phase. In the composite material, the diffusion between the quasicrystalline and the matrix alloy caused the decomposition of the structure of quasicrystalline phase. With the increase of quasicrystalline content, the tensile strength of the composites increased and the elongation decreased. However, the addition of the Cr element changed the acicular β-Fe phase into a Chinese character-like or bone-like α-Fe phase which increased the elongation of the composite.

Key words： Al-Cu-Fe-Cr quasicrystalline heat treatment mechanical stirring aluminium-based composite

Published: 09 August 2018

CLC number:

TG292

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	Articles by authors
	YUAN Ye
	WANG Yifan
	HOU Hua
	ZHAO Yuhong
	TIAN Jinzhong

Cite this article:

YUAN Ye,WANG Yifan,HOU Hua, et al. Study on Al-Cu-Fe-Cr Quasicrystalline Reinforced Aluminum Matrix Composites[J]. Materials Reports, 2018, 32(15): 2635-2639.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.15.014 OR http://www.mater-rep.com/EN/Y2018/V32/I15/2635

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