C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 21/00 (2006.01) B22D 17/22 (2006.01) B22D 21/04 (2006.01) C22C 21/08 (2006.01) C22F 1/05 (2006.01)
Patent
CA 2687893
The present invention relates to modified alloy compositions for reduced hot tear susceptibility, where the aluminum alloy comprising from 0.01 to 0.025 % by weight of Sr; and TiB2, measured by its boron content, from 0.001 to 0.005% by weight of B. The invention also relates to method of preventing or eliminating hot tears in an aluminum alloy comprising the step of combining with aluminum from 0.01to 0.025 % by weight of Sr; and TiB2, measured by its boron content, from 0.001 to 0.005% by weight of B.
L'invention concerne des compositions d'alliage modifié présentant une sensibilité réduite au criquage à chaud, l'alliage d'aluminium contenant entre 0,01 et 0,0025% en poids de Sr; et du diborure de titane (TiB2) mesuré sur la base de sa teneur en bore, entre 0,001 et 0,005% en poids de B. Par ailleurs, l'invention concerne un procédé qui permet de prévenir ou de supprimer le criquage à chaud dans un alliage d'aluminium, qui consiste à ajouter à l'aluminium entre 0,001 et 0,025% en poids de Sr; et du diborure de titane (TiB2), mesuré sur la base de sa teneur en bore, entre 0,001 et 0,005% en poids de B.
Andrade Neivi
Langlais Joseph
Lemieux Alain
Alcan International Ltd.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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