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용탕단조법에 의한 금속간화합물 / Al 기지 복합재료 개발을 위한 기초연구
A Study on Fabrication of Intermetallic Compounds / Al Matrix Composites by Squeeze Casting
최답천 , 이경구 , 이연오 ( Dap Chun Choi , Kyung Ku Lee , Yeon O Lee )
UCI I410-ECN-0102-2009-580-008950999

The microvickers hardness and microstructure of Fe/Al composite fabricated by squeeze casting method were investigated. Pure Al and A356 Alloy were chosen for the matrix composition and Fe preform was fabricated with sintered Fe powder at 1000℃ for 30min. under hydrogen atmosphere. Experimental variables were included preheating temperature, melt temperature and applied pressure. Analysing the experimental result concerning microstructure of fabricated composites, Fe/A356 composite showed improved microstructure at 600℃ melt temperature and 350℃ preform preheating temperature in Fe distribution and Infiltrated distance. The results of EDX and XRD showed that the interfacial zones of Fe/Al composite were composed of non-equilibrium intermetallic layers[(Al_5Fe₂)_x, Al_(13)Fe₄m Fe₃Al, FeAl]. The microvickers hardness of Fe/Al composite showed higher value than Fe/A356 composite in interface.

[자료제공 : 네이버학술정보]
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