Age-hardenable aluminum alloy and method for improving the ability of a semi-finished or finished product to age artificially

US10774409B2 · kind B2 · utility

Assignee

• AMAG Rolling Gmbh · AT

Inventors

• Peter Uggowitzer · Ottenbach, CH
• Stefan Pogatscher · Gai, AT
• Helmut Antrekowitsch · Leoben, AT
• Marion Werinos · Ebersdorf, AT
• Thomas Ebner · Braunau am Inn, AT
• Carsten Melzer · St. Johann in Tirol, AT

Key dates

• Filing date: Jan 8, 2019
• Grant date: Sep 15, 2020
• Expiry date: Jan 8, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D2211/004
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An age-hardenable aluminum alloy on the basis of Al—Mg—Si, Al—Zn, Al—Zn—Mg or Al—Si—Mgv has precipitates caused by natural aging. The aluminum alloy has at least one alloy element, in addition to its main alloy element or in addition to its main alloy elements, which can be correlated with quenched-in empty spaces of the aluminum alloy, particularly reducing their mobility in the crystal lattice, at such a content less than 500, particularly less than 200 atomic ppm, that the aluminum alloy forms empty spaces essentially not correlated with these precipitates, in order to reduce the negative effect of natural aging of the aluminum alloy on its further artificial aging, by mobilization of these non-correlated empty spaces.