Title:
微細クラックが抑制された熱間プレス成形品及びその製造方法
Document Type and Number:
Japanese Patent JP6661772
Kind Code:
B2
Abstract:
Disclosed are a hot press-formed article and a method for manufacturing the same. The article is manufactured by hot press forming a galvanized steel sheet comprising a base steel plate and a zinc-based coat layer formed on a surface of the base steel plate, wherein the zinc-based coat layer contains at least one element selected from the group consisting of Sb, Sn and Bi in a total amount of 0.05% to 2.0% by weight, and the balanced amount of Zn and inevitable impurities, at least 70% by weight of the at least one element selected from the group consisting of Sb, Sn and Bi being concentrated in a region 3µm or less distant from the surface of an alloyed zinc-based coat layer, formed by alloying the zinc-based coat layer, of the hot press-formed article.
Inventors:
Fan Hyun-Suk
Song, Il-Lyon
Kim, John-Sun
Song, Il-Lyon
Kim, John-Sun
Application Number:
JP2018532709A
Publication Date:
March 11, 2020
Filing Date:
December 21, 2016
Export Citation:
Assignee:
POSCO
International Classes:
C23C2/28; B21D22/20; C21D1/18; C21D9/00; C22C18/00; C22C18/04; C23C2/06
Domestic Patent References:
| JP2004124207A | ||||
| JP2014527120A | ||||
| JP2014043641A |
Foreign References:
| WO2011081043A1 |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Masakazu Ito
Yuko Hara
Masakazu Ito
Yuko Hara