Title:
HOT-DIP AL-ZN-BASED PLATED STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/181426
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a hot-dip Al-Zn-based plated steel sheet that stably has excellent bending processing ability and corrosion resistance at a bending processed part, and a method for manufacturing the hot-dip Al-Zn-based plated steel sheet. In order to achieve said purpose, the present invention is a hot-dip Al-Zn-based plated steel sheet provided with a plating film having a compositional makeup containing 45-65 mass% of Al and 1.0-3.0 mass% of Si, the remaining portion being Zn, Fe, and unavoidable impurities, and is characterized in that the plating film has dendrites formed mainly of primary Al crystals and dendrite gaps including Al-Zn eutectic crystals, the primary Al crystals each include an α-Al phase matrix and Zn precipitates, and the Zn content in the matrix is 30 mass% or less.
Inventors:
OOI TOSHIHIKO (JP)
ASHIKARI ICHIRO (JP)
FUJISAWA HIDESHI (JP)
TOBIYAMA YOICHI (JP)
SHIN OSAMU (JP)
ASHIKARI ICHIRO (JP)
FUJISAWA HIDESHI (JP)
TOBIYAMA YOICHI (JP)
SHIN OSAMU (JP)
Application Number:
PCT/JP2022/017433
Publication Date:
September 28, 2023
Filing Date:
April 08, 2022
Export Citation:
Assignee:
JFE GALVANIZING & COATING CO LTD (JP)
International Classes:
C23C2/12; C22C18/04; C22C21/10; C23C2/06; C23C2/28
Foreign References:
| JP2003268518A | 2003-09-25 | |||
| JPH11343559A | 1999-12-14 | |||
| JPH11343554A | 1999-12-14 | |||
| JP2013007071A | 2013-01-10 | |||
| JP2005098923A | 2005-04-14 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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