Hot Stamp Formed Article

Abstract: Provided is a hot-stamp-formed article having a specific chemical composition, the hot-stamp-formed article containing, by area ratio, 90% or more in total of at least one of martensite, bainite, and tempered martensite, and having a microstructure in which the standard deviation in a grain size distribution of prior-austenite grains is 5.0 µm or less and the total segregation level of at least one of Mo, W, Ta, Re, Os, Ir, and Tc at the prior-austenite grain boundaries is 0.10 atom% or higher.

Patent Information

Application #

Filing Date

03 June 2024

Publication Number

51/2024

Publication Type

INA

Invention Field

METALLURGY

Status

Email

Parent Application

Applicants

NIPPON STEEL CORPORATION

6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Inventors

1. TODA, Yuri

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

2. ITO, Kazuma

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

3. ASADA, Yuma

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Specification

Documents

Application Documents

#	Name	Date
1	202417042965-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [03-06-2024(online)].pdf	2024-06-03
2	202417042965-STATEMENT OF UNDERTAKING (FORM 3) [03-06-2024(online)].pdf	2024-06-03
3	202417042965-REQUEST FOR EXAMINATION (FORM-18) [03-06-2024(online)].pdf	2024-06-03
4	202417042965-PROOF OF RIGHT [03-06-2024(online)].pdf	2024-06-03
5	202417042965-PRIORITY DOCUMENTS [03-06-2024(online)].pdf	2024-06-03
6	202417042965-POWER OF AUTHORITY [03-06-2024(online)].pdf	2024-06-03
7	202417042965-FORM 18 [03-06-2024(online)].pdf	2024-06-03
8	202417042965-FORM 1 [03-06-2024(online)].pdf	2024-06-03
9	202417042965-DECLARATION OF INVENTORSHIP (FORM 5) [03-06-2024(online)].pdf	2024-06-03
10	202417042965-COMPLETE SPECIFICATION [03-06-2024(online)].pdf	2024-06-03
11	202417042965-FORM 3 [07-10-2024(online)].pdf	2024-10-07