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1. (WO2018219412) FORMED SHEET-METAL COMPONENT AND METHOD FOR PRODUCING THE FORMED SHEET-METAL COMPONENT

Pub. No.:    WO/2018/219412    International Application No.:    PCT/DE2018/100530
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Sat Jun 02 01:59:59 CEST 2018
IPC: C21D 9/46
C21D 8/02
Applicants: BENTELER AUTOMOBILTECHNIK GMBH
THYSSENKRUPP STEEL EUROPE AG
THYSSENKRUPP HOHENLIMBURG GMBH
Inventors: TOMITZ, Andreas
HÖHNE, Anastasia Viviana
SCHRADER, Karin
KETTLER, Markus
BAKE, Karsten
FROST, Georg
Title: FORMED SHEET-METAL COMPONENT AND METHOD FOR PRODUCING THE FORMED SHEET-METAL COMPONENT
Abstract:
The invention relates to a formed sheet-metal component, produced by hot forming and press hardening from a hardenable one-piece, single-material steel alloy, wherein the formed sheet-metal component (1) has a tensile strength greater than 1200 MPa, in particular greater than 1350 MPa, and has a bending angle greater than 60° in the case of a wall thickness of 0.5 to 1.5 mm or a bending angle greater than 45° in the case of a wall thickness of 1.5 to 2.5 mm, characterized in that a number of martensite layers lying one on top of the other are formed in the formed sheet-metal component, wherein a martensite layer lying on the outside of the formed sheet-metal component has a greater ductility than a martensite layer lying thereunder.