Hot-dip galvanized DH steel, preparation method thereof and automobile structural member

The invention relates to hot-dip galvanized DH steel and a preparation method thereof and an automobile structural member, and belongs to the technical field of steel preparation, and the hot-dip galvanized DH steel comprises a steel base body and a zinc coating attached to at least part of the surf...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	LIU HUASAI, TENG HUAXIANG, PAN LIMEI, ZOU YING, JIANG YINGHUA, CHEN BIN, QIU MUSHENG, HAN YUN, LI FEI, ZHU GUOSEN, LONG YUAN, HAN LONGSHUAI, ZHANG WEI, BAI XUE, YANG FENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS MOTOR VEHICLES PERFORMING OPERATIONS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRAILERS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The invention relates to hot-dip galvanized DH steel and a preparation method thereof and an automobile structural member, and belongs to the technical field of steel preparation, and the hot-dip galvanized DH steel comprises a steel base body and a zinc coating attached to at least part of the surface of the steel base body; the microscopic structure of the steel matrix comprises ferrite, martensite, bainite and retained austenite; the martensite comprises fresh martensite and tempered martensite; in the microstructure of the steel matrix, the volume fraction of the fresh martensite is less than 10%. According to the hot-dip galvanized DH steel, by controlling the content of fresh martensite and tempered martensite in the microstructure of a steel matrix of the hot-dip galvanized DH steel, most of the fresh martensite in the microstructure of the steel matrix is converted into the tempered martensite, and the volume fraction of the fresh martensite is smaller than 10%, so that the hardness difference between