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Martensitic steels with improved properties

Objective

The maximal strength level for a given steel composition can be realised with the martensitic microstructure. However, as-quenched martensite shows some major drawbacks such as low formability and low toughness level. Tempering at a relatively low temperature and/or keeping a certain amount of residual austenite in the microstructure could improve these properties.

Furthermore, an additional low temperature galvanising treatment will provide an additional corrosion resistance to the hot rolled high strength strips. This development will allow the production of coated ultrahigh strength hot rolled steel (TS higher than 1000MPa) with superior formability and toughness level.

Coordinator

CENTRE DE RECHERCHES METALLURGIQUES ASBL
Address
Avenue Ariane 5
1200 Bruxelles
Belgium

Participants (3)

KORROSIONS- OCH METALLFORSKNINGSINSTITUTET AB
Sweden
Address
Drottning Kristinas Väg 48
11428 Stockholm
ONDERZOEKSCENTRUM VOOR AANWENDING VAN STAAL N.V.
Belgium
Address
John Kennedylaan 3
9060 Zelzate
VOESTALPINE STAHL GMBH
Austria
Address
Voest-alpine-strasse 3
4020 Linz