Al-Mg-Si alloy suited for extrusion

Aluminum alloy containing Mg and Si, in particular useful for extrusion purposes containing in wt %: Mg 0.3-0.5 Si 0.35-0.6 Mn 0.02-0.08 Cr 0.05 Zn 0.15 Cu 0.1 Fe 0.08-0.28 and in addition grain refining elements up to 0.1 wt % and incidental impurities up to 0.15 wt %. The manganese (Mn), within...

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Bibliographische Detailangaben
Hauptverfasser:	ODDVIN REISO, ULF TUNDAL, GUNNAR GJERTSEN, JOSTEIN ROYSET, JAN ANDERS SAETER
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	Aluminum alloy containing Mg and Si, in particular useful for extrusion purposes containing in wt %: Mg 0.3-0.5 Si 0.35-0.6 Mn 0.02-0.08 Cr 0.05 Zn 0.15 Cu 0.1 Fe 0.08-0.28 and in addition grain refining elements up to 0.1 wt % and incidental impurities up to 0.15 wt %. The manganese (Mn), within the specified limits, has an additional positive effect on the extrudability of an AlMgSi alloy. In addition to promoting the transformation of the AlFeSi intermetallic phases, AlMnFeSi dispersoid particles are formed during homogenization. These particles are acting as nucleation sites for Mg2Si particles during cooling after homogenization. In a high quality billet the Mg2Si particles formed during cooling after homogenization should easily dissolve during the preheating and the extrusion operation before the material reach the die opening.