Title:
STEEL WELDED MEMBER
Document Type and Number:
WIPO Patent Application WO/2022/230071
Kind Code:
A1
Abstract:
This steel welded member is obtained by joining, via at least one spot welded part, multiple Zn-plated steel materials having a Zn plating layer at the steel material surface. The steel material contains, by mass%, C: 0.05 to 0.40%, Si: 0.2 to 3.0%, and Mn: 0.1 to 5.0%. The steel material includes, by surface area percentage, 20% to 80% Γ phase (Fe3Zn10) within a region of 0.5 mm from the edge of a pressure welded part of the spot welded part, and contains one or more oxides having a major axis of 0.5 μm or greater.
Inventors:
MITSUNOBU TAKUYA (JP)
MATSUDA KEITARO (JP)
MAKI JUN (JP)
TAKAHASHI TAKEHIRO (JP)
TAKEBAYASHI HIROSHI (JP)
MATSUDA KEITARO (JP)
MAKI JUN (JP)
TAKAHASHI TAKEHIRO (JP)
TAKEBAYASHI HIROSHI (JP)
Application Number:
PCT/JP2021/016844
Publication Date:
November 03, 2022
Filing Date:
April 27, 2021
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
B23K11/11; B23K11/16; C22C38/00; C22C38/58; C23C2/02; C25F1/06; C21D9/46; C22C18/00; C22C21/10
Domestic Patent References:
| WO2020130079A1 | 2020-06-25 | |||
| WO2019116531A1 | 2019-06-20 |
Foreign References:
| JP2018039019A | 2018-03-15 | |||
| JP2013108107A | 2013-06-06 | |||
| JPH04218661A | 1992-08-10 | |||
| JP2005103608A | 2005-04-21 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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