Safety component moulded in al-si alloy

C - Chemistry – Metallurgy – 22 – C

Patent

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Details

C22C 21/02 (2006.01) C22C 21/04 (2006.01) C22F 1/043 (2006.01)

Patent

CA 2432039

The invention concerns a safety component with high mechanical strength and good ductility, moulded in Al-Si alloy consisting ( in wt. %) of: Si: 2-11; Mg: 0.3-0.7; Cu: 0.3 0.9; other elements < 1 each and < 2 in total, the rest being aluminium, and solution heat treated, tempered and hardened resulting in Brinell hardness of more than 125. The invention also concerns a safety component with high mechanical resistance and good ductility, moulded in Al-Si alloy consisting (in wt. %) of: Si: 2-6; Mg: 0.3-0.7; Fe < 0.20; other elements < 0.3 each and < 1 in total; the rest being aluminium; solution heat treated, hardened and tempered resulting in a quality index Q=R¿m?+log A>485 MPa.

L'invention a pour objet une pièce de sécurité à haute résistance mécanique et bonne ductilité, moulée en alliage Al-Si de composition (% en poids): Si:2-11; Mg:0,3-0,7; Cu:0,3-0,9; autres éléments <1 chacun et <2 au total; reste aluminium; et traitée thermiquement par une mise en solution, une trempe et un revenu conduisant à un durcissement de plus de 125 Brinell. L'invention a également pour objet une pièce de sécurité à haute résistance mécanique et bonne ductilité, moulée en alliage Al-Si de composition (% en poids): Si:2-6; Mg:0,3-0,7; Fe<0,20; autres éléments <0,3 chacun et <1 au total; reste aluminium; et traitée thermiquement par une mise en solution, une trempe et un revenu conduisant à un indice de qualité Q=Rm+log A>485 MPa.

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