Method of producing ultrahigh-strength steel sheets and steel sheets therefor

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11970753
APP PUB NO 20210317544A1
SERIAL NO

17276280

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Abstract

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A method for producing an ultra-high-strength hot-rolled structural steel includes producing a steel alloy with a carbon content not greater than 0.2%, avoiding a diffusive transformation of the austenite by achieving a transformation delay through the addition of manganese, chromium, and boron, and casting the steel alloy. The cast steel alloy is heated and hot rolled to form a steel strip which is then immediately hardened and mechanically straightened to produce mobile dislocations, wherein the boron, manganese and chromium delay diffusive transformation from an austenite structure to achieve formation of a martensite structure during the hardening. The steel strip is then annealed at a temperature between 100 and 200° C.

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Patent Owner(s)

  • VOESTALPINE STAHL GMBH

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hubmer, Gerhard Marchtrenk, AT 1 0
Klein, Martin Linz, AT 76 754
Sonnleitner, Markus Hofkirchen, AT 1 0
Spindler, Helmut Oed-Ohling, AT 5 0

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