ALUMINUM ALLOY, WHICH HAVING A IMPROVED STABILITY K TO OXIDATION, STABILITY THE K OF CORROSION OR A IMPROVED RESISTANCE OF FATIGUE AND THE CAST UNDER PRESSURE MATERIAL, AND EXTRUDED MATERIAL, AND WITH USE OF ALUMINUM ALLOY

摘要

1. Aluminum (Al) alloy obtained by adding magnesium (Mg) ligatures, wherein the compound based on calcium (Ca) is distributed in the matrix of Mg in molten Al, Al alloy matrix which contains a compound based on Ca, iAl alloy has improved resistance to oxidation, resistant to corrosion by salt water, or improved fatigue resistance compared to the same Al alloy containing no compound based Ca.2. Aluminum alloy according to claim 1, characterized in that the Ca-based compound comprises at least one compound selected from compounds MgCa compounds Al-Ca compound and Mg-Al-Ca, wherein the compound comprises MgCa MgCa, compound AlCa comprises at least one compound selected from AlCa and AlCa, and Mg-AlCa compound comprises a (Mg, Al) Ca.3. Aluminum alloy according to claim 1, characterized in that the Mg master alloy is prepared by introducing the additive based on Ca in the molten starting material comprising pure Mg or Mg alloy containing Al, used as starting materiala.4. Aluminum alloy according to claim 1, characterized in that the Ca-based compound prepared by dispersing additive on the basis of Ca on the surface of the top of the molten Mg and subsequent decomposition of at least part of the additive based on Mg.5 Ca in the melt. Aluminum alloy according to claim 4, characterized in that the Ca-based compound obtained by decomposition of additives on the basis of Ca in Mg melt so that on the basis of additive Ca does not substantially remain in ligature.6 Mg. Aluminum alloy according to claim 5, characterized in that the upper part of the Mg melt is stirred, and stirring is carried out in the upper part of which is not more than 20% of the total depth Mg.7 melt. aluminum