本文
No.1（2006）11.The Crystallization of Al-Fe-Si Intermetalic compound in Aluminum Alloy with High Contamination of Fe by Semi-Solid Method
Tomotaro Watanabe, Kenji Sato
The aluminum alloy can be made from aluminum scraps with only 3% of the energy in the case of making from bauxite which is the raw material of aluminum. Then the recycle system of aluminum alloys is developed. On the other hand, it is known that the contamination to the recycle aluminum alloys cause the crystallization of the intermetallic compound and the decrease of the strength. Especially the iron make β-phase of Al-Fe-Si intermetalic compound, which is brittle and like a plate, then it has strong influence to the elongation and the toughness of the recycle aluminum alloys.
In the present paper, the influence of the iron to the crystallization of β-phase of Al-Fe-Si intermetalic compound was ensured and the effect of addition of some metals to the crystallization of β-phase was discussed. In the case of adding manganum to the aluminum alloy, the decrease of β-phase can be observed.
Furthermore, by the semi-solid method, the specimen was prepared and its micro structure of β-phase was observed and discussed.
Keywords
aluminum alloy, intermetallic compound, β-phase, Al-Fe-Si, iron, recycle, semi-solid
