Microstructure and Mechanical Properties of Al-12.6%Si Composite Reinforced by Al₆₃Cu₂₅Fe₁₂Quasicrystal

Abstract:

In this paper, Al-12.6%Si/Al₆₃Cu₂₅Fe₁₂ composites were fabricated by method of casting. The microstructure and chemical composition of Al₆₃Cu₂₅Fe₁₂ quasicrystal alloy and Al-12.6%Si alloy reinforced by the quasicrystal were studied, and the mechanical properties of Al-12.6%Si composite were also measured. The results show that almost single quasicrystalline phases exist in the samples which are cast with the 1300°C melt. Quickly enough cooling rate and appropriate melt temperature are necessary for the formation of the quasicrystalline phase. In addition, Al-12.6%Si composite has optimal mechanical properties when the amount of Al₆₃Cu₂₅Fe₁₂ quasicrystal is 3 wt%.

• Periodical: Applied Mechanics and Materials (Volumes 182-183)
• Pages: 162-166
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.182-183.162
• Online since: June 2012
• Authors: Can Can Li, Hao Ran Geng, Zhen Yuan Li, Hai Ou Qin
• Keywords: Alloy, Casting, Mechanical Property, Microstructure, Scanning Electron Microscope (SEM)

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