MEMBER FOR AUTOMOBILE STRUCTURE

One embodiment of the present invention discloses a member for automobile structure including a base steel sheet and a plating layer covering at least one surface of the base steel sheet, wherein the member for automobile structure has a tensile strength of 1350 MPa or greater and a yield strength o...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HWANG, Kyu Yeon, JUNG, Seung Pill, KIM, Hye Jin, JUNG, Hyun Yeong, LEE, Jin Ho
Format:	Patent
Sprache:	eng ; fre ; ger
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 MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	One embodiment of the present invention discloses a member for automobile structure including a base steel sheet and a plating layer covering at least one surface of the base steel sheet, wherein the member for automobile structure has a tensile strength of 1350 MPa or greater and a yield strength of 900 MPa or greater, wherein the base steel sheet includes a martensite phase having an area fraction of 80 % or greater, an iron-based carbide located inside the martensite phase and having an area fraction of less than 5% based on the martensite phase, and precipitates distributed inside the base steel sheet, wherein a mismatch dislocation exists at the interface between iron and the precipitates of the base steel sheet, and a difference between lattice constants of the iron and the precipitates is less than 25 % of the lattice constants of the iron.