Title:
HOT STAMPED COMPONENT
Document Type and Number:
WIPO Patent Application WO/2022/039275
Kind Code:
A1
Abstract:
This hot stamped component has a base material steel sheet and an Al-Fe alloy plating layer formed on the base material steel sheet, wherein: the Al-Fe alloy plating layer has a thickness of at least 10.0 μm and contains at least 30% of Al, in mass percentage, and one or more selected from the group consisting of W, Mo, Sb, Sn, Cr, Co, Cu, Ni, Ta, Ca, Mg, Sr, Se, Re, and Hf, which are corrosion resistance improving elements; and, where the element having the greatest maximum concentration among the corrosion resistance improving elements is the B1 element, the maximum concentration of the B1 element is Cmax, the sheet thickness of the hot stamped component is t, a location at t/4 from the surface of the hot stamped component in the direction toward the sheet thickness center of the hot stamped component is tQ, and the concentration of the B1 element at the tQ location is CQ, the value of Cmax/CQ in the range up to 8.0 μm from the surface of the Al-Fe alloy plating layer in the direction toward the sheet thickness center is 0.05-30.00.
Inventors:
SUZUKI YUKI (JP)
KUSUMI KAZUHISA (JP)
EGUCHI HARUHIKO (JP)
FUJITA SOSHI (JP)
FUDA MASAHIRO (JP)
TABATA SHINICHIRO (JP)
KUSUMI KAZUHISA (JP)
EGUCHI HARUHIKO (JP)
FUJITA SOSHI (JP)
FUDA MASAHIRO (JP)
TABATA SHINICHIRO (JP)
Application Number:
PCT/JP2021/030679
Publication Date:
February 24, 2022
Filing Date:
August 20, 2021
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D9/00; C21D1/18; C21D9/46; C22C21/00; C22C21/02; C22C21/06; C22C21/10; C22C38/00; C22C38/60; C23C2/12; C23C2/28
Domestic Patent References:
| WO2012128225A1 | 2012-09-27 | |||
| WO2012137687A1 | 2012-10-11 | |||
| WO2020162513A1 | 2020-08-13 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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