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Hot Stamp Molded Object
Abstract: Provided is a hot-stamp-molded object having excellent delayed fracture resistance. The hot-stamp-molded object 1 comprises a steel substrate 10 and an Al coating 20 formed on the steel substrate 10. The Al coating 20 is formed at the interface with the steel substrate 10 and includes an interfacial layer 21 having a structure in which aFe is partly substituted with Al and Si, a middle layer 22 formed on the interfacial layer 21, and an oxide film layer formed on the middle layer, wherein: the middle layer 22 includes an Fe-Al-Si phase 22a having a structure in which aFe is partly substituted with Al and Si; the Fe-Al-Si phase 22a contains one or more kinds of elements selected from the group consisting of Zr, Ce, Y, Ta, Ni, Cu, Nb, Cr, Co, V, and Ti; and the oxide film layer 23 contains one or more kinds of elements selected from the group consisting of Be, Mg, Ca, Sr, Ba, Sc, and Zn.
Notices, Deadlines & Correspondence
Patent Information
Applicants
NIPPON STEEL CORPORATION
Inventors
1. DOI, Takashi
2. KOBAYASHI, Kenji
3. INATOMI, Naomi
4. SUZUKI, Yuki
5. FUJITA, Soshi
6. FUDA, Masahiro
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202317065629-STATEMENT OF UNDERTAKING (FORM 3) [29-09-2023(online)].pdf | 2023-09-29 |
| 2 | 202317065629-PROOF OF RIGHT [29-09-2023(online)].pdf | 2023-09-29 |
| 3 | 202317065629-POWER OF AUTHORITY [29-09-2023(online)].pdf | 2023-09-29 |
| 4 | 202317065629-FORM 18 [29-09-2023(online)].pdf | 2023-09-29 |
| 5 | 202317065629-FORM 1 [29-09-2023(online)].pdf | 2023-09-29 |
| 6 | 202317065629-FIGURE OF ABSTRACT [29-09-2023(online)].pdf | 2023-09-29 |
| 7 | 202317065629-DRAWINGS [29-09-2023(online)].pdf | 2023-09-29 |
| 8 | 202317065629-DECLARATION OF INVENTORSHIP (FORM 5) [29-09-2023(online)].pdf | 2023-09-29 |
| 9 | 202317065629-COMPLETE SPECIFICATION [29-09-2023(online)].pdf | 2023-09-29 |
| 10 | 202317065629-FORM 3 [06-03-2024(online)].pdf | 2024-03-06 |