Title:
HOT-STAMP-FORMED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2023/199638
Kind Code:
A1
Abstract:
This hot-stamp-formed article has a specified chemical composition, in which the standard deviation of crystal grain diameters of prior austenite grains in an internal region is 5.0 μm or less, the area ratio of bainite in a surface layer region is more than 10%, the maximum value of a pole density in a texture is 4.0 or less, and the de-B index is 0.05 or more.
Inventors:
TODA YURI (JP)
FUJINAKA SHINGO (JP)
HAGA JUN (JP)
ASADA YUMA (JP)
FUJINAKA SHINGO (JP)
HAGA JUN (JP)
ASADA YUMA (JP)
Application Number:
PCT/JP2023/007855
Publication Date:
October 19, 2023
Filing Date:
March 02, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
B21D22/20; C21D1/18; C21D9/00; C21D9/46; C22C38/00
Domestic Patent References:
| WO2021230150A1 | 2021-11-18 | |||
| WO2021230149A1 | 2021-11-18 | |||
| WO2020213179A1 | 2020-10-22 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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