US 12,234,538 B2
Aluminum-plated steel sheet, hot-stamped member, and method for manufacturing hot-stamped member
Yuki Suzuki, Tokyo (JP); Soshi Fujita, Tokyo (JP); Masahiro Fuda, Tokyo (JP); Hideaki Irikawa, Tokyo (JP); Takeshi Imai, Tokyo (JP); and Fumio Eihara, Tokyo (JP)
Assigned to NIPPON STEEL CORPORATION, Tokyo (JP)
Appl. No. 17/296,897
Filed by NIPPON STEEL CORPORATION, Tokyo (JP)
PCT Filed Nov. 29, 2019, PCT No. PCT/JP2019/046779
§ 371(c)(1), (2) Date May 25, 2021,
PCT Pub. No. WO2020/111230, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 2018-225421 (JP), filed on Nov. 30, 2018.
Prior Publication US 2022/0025498 A1, Jan. 27, 2022
Int. Cl. C22C 38/58 (2006.01); B21D 22/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/42 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01); C23C 2/26 (2006.01); C23C 2/28 (2006.01); C25D 1/04 (2006.01)
CPC C22C 38/58 (2013.01) [B21D 22/022 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 38/42 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); C23C 2/26 (2013.01); C23C 2/265 (2013.01); C23C 2/28 (2013.01); C23C 2/29 (2022.08); C25D 1/04 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An aluminum-plated steel sheet comprising:
a steel sheet; and
a plating layer formed on a surface of the steel sheet,
wherein a chemical composition of the plating layer is, by mass %,
a total content of one or more A group elements selected from Be, Mg, Ca, Sr, Ba, Sc, Ti, V, Cr, Mn, Co, Ni, Cu, and Zn: 0.001% to 30.00%,
Si: 0% to 20.0%,
Fe: 0% to 10.0%, and
a remainder: Al and impurities,
a thickness t of the plating layer is 10 to 60 μm, and
an average grain size is the smaller of 2t/3 or less and 15 μm or less in a thickness range from an outermost surface of the plating layer to a ⅔ thickness t position,
wherein, in a case of measuring the A group elements in the plating layer in a thickness direction from the outermost surface of the plating layer using GDS,
a maximum value of detection intensities of the A group elements in a range from the outermost surface of the plating layer to a ⅓ thickness t position is 2.0 times or more an average value of detection intensities of the A group elements in a range from the ⅔ thickness t position to a thickness t position.