Aimgsi casting alloy

Details Aimgsi casting alloy Aimgsi casting alloy

C - Chemistry, Metallurgy

22

C

C22C 21/08 (2006.01)

Patent

CA 2371318

A casting alloy of the AIMgSi type contains Magnesium 3.0 to 7.0 wt. % Silicon 1.7 to 3.0 wt. % Manganese 0.2 to 0.48 wt. % Iron 0.15 to 0.35 wt. % Titanium max. 0.2 wt. % as desired Ni 0.1 to 0.4 wt % and aluminium as the rest along with production related impurities, individ- ually at most 0.02 wt. %, in total at most 0.2 wt. %, with the further provision that the magnesium and silicon are present in the alloy in a Mg : Si weight ratio of 1.7 : 1, corresponding to the composition of the quasi binary eutectic made up of the solid state phases Al and Mg2Si, whereby the deviation from the exact composition of the quasi-binary eutectic amounts to at most -0.5 to +0.3 wt. % for magnesium and -0.3 to +0.5 wt. % for silicon. The finely dispersed precipitates of the intermetallic phase Mg2Si results in high ductility. Good spherodisation of the Mg2Si precipitate particles takes place already at temperatures less than 400°C.

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