HOT-PRESS FORMED PRODUCT AND METHOD FOR MANUFACTURING SAME

Provided is a hot-press molded article that can achieve a high level of balance between high strength and extension by region and has a region corresponding to an energy absorption site and a shock resistant site within a single molded article without applying a welding method by means of having fir...

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Bibliographische Detailangaben
Hauptverfasser:	OKITA, Keisuke, MURAKAMI, Toshio, IKEDA, Shushi, NAITOU, Junya
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 MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	Provided is a hot-press molded article that can achieve a high level of balance between high strength and extension by region and has a region corresponding to an energy absorption site and a shock resistant site within a single molded article without applying a welding method by means of having first region having a metal structure containing both 80-97 area% of martensite and 3-20 area% of residual austenite, the remaining structure comprising no more than 5 area%, and a second region having a metal structure comprising 30-80 area% of ferrite, less than 30 area% (exclusive of 0 area%) of bainitic ferrite, no greater than 30 area% (exclusive of 0 area%) of martensite, and 3-20 area% of residual austenite.