Title:
HOT-STAMPED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2021/171519
Kind Code:
A1
Abstract:
Provided is a hot-stamped article comprising a steel base material and an Al-Zn-Mg plating layer formed on the surface of the steel base material, wherein: the plating layer has a prescribed chemical composition; the plating layer comprises an interface layer that contains Fe and Al and is positioned at the interface with the steel base material, and a main layer that is positioned on the interface layer; the main layer includes a Mg-Zn-containing phase at an area ratio of 10.0-85.5%, and a Fe-Al-containing phase at an area ratio of 15.0-90.0%; the Mg-Zn-containing phase includes at least one phase selected from the group consisting of a MgZn phase, a Mg2Zn3 phase, and a MgZn2 phase; and the Fe-Al-containing phase includes at least one of a Fe-Al phase and a Fe-Al-Zn phase, with the area ratio of the Fe-Al-Zn phase within the main phase being 10.0% or less.
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Inventors:
MITSUNOBU TAKUYA (JP)
TAKAHASHI TAKEHIRO (JP)
MAKI JUN (JP)
TAKAHASHI TAKEHIRO (JP)
MAKI JUN (JP)
Application Number:
PCT/JP2020/008164
Publication Date:
September 02, 2021
Filing Date:
February 27, 2020
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
B21D22/20; C23C2/06; C22C18/04; C22C21/10; C23C2/12; C21D1/18; C21D9/00; C22C38/00; C22C38/06; C22C38/58
Domestic Patent References:
| WO2019180852A1 | 2019-09-26 | |||
| WO2018131171A1 | 2018-07-19 |
Foreign References:
| JP2012112010A | 2012-06-14 | |||
| JP2017057502A | 2017-03-23 | |||
| JP2012112010A | 2012-06-14 | |||
| JP2009120948A | 2009-06-04 |
Other References:
See also references of EP 4112767A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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