Method and apparatus for forming aluminum-transition metal alloy

Details Method and apparatus for forming aluminum-transition metal alloy Method and apparatus for forming aluminum-transition metal alloy

1988-08-09

1990-08-14

Dean, R.

Alloys or metallic compositions

Aluminum base

Zinc containing

164423, 164463, 420548, 420550, 420551, C22C 102

Patent

active

049485580

ABSTRACT:
The invention provides an aluminum based alloy consisting essentially of the formula Al.sub.bal Fe.sub.a X.sub.b, wherein X is at least one element selected from the group consisting of Zn, Co, Ni, Cr, M, V, Zr, Ti, Y, Si and Ce, "a" ranges from about 7-15 wt %, "b" ranges from about 1.5-10 wt % and the balance is aluminium. The alloy has a predominately microeutectic microstructure.
The invention provides a method and apparatus for forming rapidly solidified metal within an ambient atmosphere, the rapidly solidified metal being an aluminum based alloy. Generally stated, the apparatus includes a moving casting surface which has a quenching region for solidifying molten metal thereon. A reservoir holds the molten metal and has orifice means for depositing a stream of the molten metal onto the casting surface quenching region. A heating mechanism heats the molten metal within the reservoir, and a gas source provides a non-reactive gas atmosphere at the quenching region to minimize oxidation of the deposited metal. A conditioning mechanism disrupts a moving gas boundary layer carried along by the moving casting surface to minimize disturbance of the molten metal on the casting surface at a quench rate of at least about 10.sup.6 .degree. C./sec.

REFERENCES:
patent: 4743317 (1988-05-01), Skinner et al.

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