Title:
ZINC ALLOY-PLATED STEEL SHEET, ELECTRODEPOSITED STEEL SHEET, MOTOR VEHICLE COMPONENT, METHOD FOR PRODUCING ELECTRODEPOSITED STEEL SHEET, AND METHOD FOR PRODUCING ZINC ALLOY-PLATED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2022/097733
Kind Code:
A1
Abstract:
Provided is a zinc alloy-plated steel sheet that exhibits excellent resistance to cracking in resistance welding in a weld, even in a case where, at an interface between an Fe-based electroplating layer and a cold rolled steel sheet, crystal orientation of the Fe-based electroplating layer and the cold rolled steel sheet is unified to a high degree. This zinc alloy-plated steel sheet has: a Si-containing cold rolled steel sheet containing 0.1-3.0 mass% of Si; an Fe-based electroplating layer which is formed on at least one surface of the Si-containing cold rolled steel sheet at a coating amount of more than 20.0 g/m2 per one surface of the same; and a zinc alloy plating layer formed on the Fe-based electroplating layer. At an interface between the Fe-based electroplating layer and the Si-containing cold rolled steel sheet, the degree to which crystal orientation of the Fe-based electroplating layer and the cold rolled steel sheet is unified is more than 50%.
Inventors:
YAMAMOTO SHUNSUKE (JP)
TAKASHIMA KATSUTOSHI (JP)
AOYAMA MAI (JP)
OKUMURA YUSUKE (JP)
KANAZAWA TOMOMI (JP)
HOSHINO KATSUYA (JP)
MATSUDA HIROSHI (JP)
OKUMURA EI (JP)
MAKIMIZU YOICHI (JP)
KOBA MASAKI (JP)
TAKASHIMA KATSUTOSHI (JP)
AOYAMA MAI (JP)
OKUMURA YUSUKE (JP)
KANAZAWA TOMOMI (JP)
HOSHINO KATSUYA (JP)
MATSUDA HIROSHI (JP)
OKUMURA EI (JP)
MAKIMIZU YOICHI (JP)
KOBA MASAKI (JP)
Application Number:
PCT/JP2021/040870
Publication Date:
May 12, 2022
Filing Date:
November 05, 2021
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C25D5/26; C21D9/46; C22C18/00; C22C38/00; C22C38/02; C22C38/60; C23C2/02; C23C2/06; C23C2/26; C23C2/28; C23C2/40; C23C28/00
Domestic Patent References:
| WO2020148944A1 | 2020-07-23 | |||
| WO2021200412A1 | 2021-10-07 |
Foreign References:
| JP2015500925A | 2015-01-08 | |||
| JPH05132747A | 1993-05-28 | |||
| JP2006097067A | 2006-04-13 | |||
| JPH10330846A | 1998-12-15 | |||
| JP6388099B1 | 2018-09-12 | |||
| JP4791992B2 | 2011-10-12 |
Other References:
See also references of EP 4242356A1
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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