METHOD OF PRODUCTION OF STEEL PARTS BY QUENCHING WITH TEMPERATURE EQUALIZATION AT MS

This invention generally relates to a method for producing steel parts by creating multiphase microstructures within the steel parts. Typically, the microstructures comprise low-stress martensite with increased ductility and stabilized retained austenite. The microstructures may be formed by cooling...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Masek, Bohuslav, Stadler, Ctibor, Holota, Radek, Hammerbauer, Jiri, Jara, Martin, Georgiev, Vjaceslav
Format:	Patent
Sprache:	eng
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:	This invention generally relates to a method for producing steel parts by creating multiphase microstructures within the steel parts. Typically, the microstructures comprise low-stress martensite with increased ductility and stabilized retained austenite. The microstructures may be formed by cooling the steel parts to a temperature around the martensite start temperature (Ms) and subsequently holding the steel part at a temperature around the Ms in order to equalize the temperature throughout the steel part. Afterwards, the formation of the microstructures and the desired properties is completed by subjecting the steel part to a final cooling in still air.