The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2012
Filed:
Oct. 15, 2004
Oddvin Reiso, Sunndalsøra, NO;
Jostein Røyset, Sunndalsøra, NO;
Jan Anders Sæter, Sunndalsøra, NO;
Ulf Tundal, Sunndalsøra, NO;
Gunnar Gjertsen, Avaldsnes, NO;
Oddvin Reiso, Sunndalsøra, NO;
Jostein Røyset, Sunndalsøra, NO;
Jan Anders Sæter, Sunndalsøra, NO;
Ulf Tundal, Sunndalsøra, NO;
Gunnar Gjertsen, Avaldsnes, NO;
Norsk Hydro ASA, Oslo, NO;
Abstract
Aluminum alloy containing Mg and Si, in particular useful for extrusion purposes containing in 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 MgSi particles during cooling after homogenization. In a high quality billet the MgSi particles formed during cooling after homogenization should easily dissolve during the preheating and the extrusion operation before the material reach the die opening.