Method for shaping structures comprised of aluminum alloys

US7217331B2 · kind B2 · utility

Assignee

• AIRBUS DEUTSCHLAND GMBH · DE

Inventors

• Stephane Jambu · Munich, DE
• Knut Juhl · Bremen, DE
• Blanka Lenczowski · Schweinhub, DE

Key dates

• Filing date: Aug 25, 2001
• Grant date: May 15, 2007
• Expiry date: Nov 17, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22F1/047
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method is provided for forming complex structures from aluminum alloys, particularly from naturally hard AlMg alloys, naturally hard AlMgSc alloys and/or age-hardenable AlMgLi alloys. The method, in a simple manner by means of as few process steps as possible, forms complex structures from the alloys such that they almost assume their final shape without any significant spring-back. Simultaneously, the loss of material is to be kept as low as possible. This is achieved by means of the following steps: elastic forming of a component to be formed into a defined contour under the effect of external force; and heating-up of the elastically formed component to a temperature higher than the temperature required for a creep formation and relaxation of stresses of the alloy, so that the component is formed while retaining the contour.