Title:
HIGH-STRENGTH DUPLEX/TRIPLEX STEEL FOR LIGHTWEIGHT CONSTRUCTION AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO2003029504
Kind Code:
A3
Abstract:
The invention concerns a steel for lightweight construction, consisting of a multiphase structure. In the case of a duplex steel, it consists of mixed ferrite ( alpha ) and austenite ( gamma ) crystals. In the case of a triplex steel, it comprises, additionally to said two phases, martensitic ( epsilon ) and/or ( kappa ) phases. The volumetric weight of the inventive steel is low as a result of the high proportion of light alloys Al, Si, Mn, Mg, Ga, and Be. The inventive alloys have a volumetric weight of less than 7 g/cm<3>.
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Inventors:
EIPPER KONRAD (DE)
FROMMEYER GEORG (DE)
FUSSNEGGER WOLFGANG (DE)
GERICK ARNDT (DE)
KLEINEKATHOEFER WOLFGANG (DE)
FROMMEYER GEORG (DE)
FUSSNEGGER WOLFGANG (DE)
GERICK ARNDT (DE)
KLEINEKATHOEFER WOLFGANG (DE)
Application Number:
PCT/EP2002/010679
Publication Date:
November 27, 2003
Filing Date:
September 25, 2002
Export Citation:
Assignee:
DAIMLER CHRYSLER AG (DE)
EIPPER KONRAD (DE)
FROMMEYER GEORG (DE)
FUSSNEGGER WOLFGANG (DE)
GERICK ARNDT (DE)
KLEINEKATHOEFER WOLFGANG (DE)
EIPPER KONRAD (DE)
FROMMEYER GEORG (DE)
FUSSNEGGER WOLFGANG (DE)
GERICK ARNDT (DE)
KLEINEKATHOEFER WOLFGANG (DE)
International Classes:
C22C38/00; C22C38/02; C22C38/04; C22C38/06; C22C38/14; C21D8/00; C21D8/02; (IPC1-7): C22C38/02; C22C38/04; C22C38/06; C22C38/14; C21D6/00; C21D8/02
Foreign References:
| EP0414949A1 | 1991-03-06 | |||
| GB2220674A | 1990-01-17 | |||
| DE1182844B | 1964-12-03 | |||
| GB938401A | 1963-10-02 | |||
| DE1262613B | 1968-03-07 | |||
| DE19727759A1 | 1999-01-07 |
Other References:
DATABASE WPI Section Ch Week 197844, Derwent World Patents Index; Class M27, AN 1978-79413A, XP002238571
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