C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 21/06 (2006.01) B22D 19/16 (2006.01) C22C 1/00 (2006.01) C22C 1/10 (2006.01) C22C 32/00 (2006.01)
Patent
CA 2129038
A method for preparing a composite material comprises the steps of providing a first mixture of a molten aluminum-base matrix alloy having at least about 4 percent by weight magnesium, and a mass of discontinuous reinforcing particles that are not soluble in the molten matrix alloy, and mixing the first mixture to wet the matrix alloy to the particles and to distribute the particles throughout the volume of the molten matrix alloy. The first matrix alloy is diluted to reduce the magnesium content of the mixture to less than about 4 percent by weight magnesium, to produce a second mixture, and the second mixture is cast. The second mixture has at least about 5 volume percent particles, and preferably has about 5-25 volume percent particles.
Procédé de préparation d'un matériau composite. Il consiste à préparer un premier mélange d'un alliage matriciel fondu à base d'aluminium comprenant au moins environ 4 % en poids de magnésium, et d'une masse de particules renforçantes en phase dispersée et non solubles dans l'alliage matriciel fondu, et à mélanger le premier mélange afin d'humidifier les particules avec l'alliage matriciel et de répartir les particules dans la totalité du volume de l'alliage matriciel fondu. On dilue le premier alliage matriciel afin de réduire à une valeur inférieure à environ 4 % en poids la teneur en magnésium du mélange, et afin d'obtenir un second mélange, et on procède à la coulée du second mélange. Le second mélange comprend au moins environ 5 % en volume de particules, et de préférence environ 5 à 25 % en volume de particules.
Hansson Inge L.h.
Jin Iljoon
Lloyd David James
Skibo Michael David
Alcan International Limited
Kirby Eades Gale Baker
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