METHOD FOR MANUFACTURING A HIGH STRENGTH STEEL PLATE AND HIGH STRENGTH STEEL PLATE

The present disclosure relates to a method for manufacturing a high strength steel plate, comprising the step of providing a hot-rolled steel plate, the step of heating the steel plate to an austenitisation temperature range, the step of quenching the steel plate in two stages with a different cooli...

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Bibliographische Detailangaben
Hauptverfasser:	HERNAUT, Philippe, TOLLENEER, Isabelle
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The present disclosure relates to a method for manufacturing a high strength steel plate, comprising the step of providing a hot-rolled steel plate, the step of heating the steel plate to an austenitisation temperature range, the step of quenching the steel plate in two stages with a different cooling speed applied to each stage, the cooling speed of the first stage being higher than the cooling speed of the second stage, the first stage of the two-stage quenching step ending at a temperature range above Ms and the second stage of the quenching step starting at a temperature range above Ms and ending at a temperature range between Ms and Mf, the step of partitioning the steel plate. The disclosure also relates to a high strength steel plate manufactured with the method.