Invention Grant
- Patent Title: High-strength galvanized steel sheet and method of manufacturing the same
- Patent Title (中): 高强度镀锌钢板及其制造方法
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Application No.: US13392455Application Date: 2010-08-31
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Publication No.: US09109275B2Publication Date: 2015-08-18
- Inventor: Yasuhide Morimoto , Nobuhiro Fujita , Akihiro Miyasaka , Kazuhiko Honda , Masafumi Azuma , Noriyuki Suzuki , Toshiki Nonaka
- Applicant: Yasuhide Morimoto , Nobuhiro Fujita , Akihiro Miyasaka , Kazuhiko Honda , Masafumi Azuma , Noriyuki Suzuki , Toshiki Nonaka
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPP2009-200467 20090831; JPP2009-216986 20090918; JPP2009-217578 20090918
- International Application: PCT/JP2010/064839 WO 20100831
- International Announcement: WO2011/025042 WO 20110303
- Main IPC: C23C2/28
- IPC: C23C2/28 ; C23C2/06 ; B22D11/115 ; C21D1/74 ; C21D1/76 ; C21D9/46 ; C22C18/04 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C23C2/26 ; B32B15/01 ; C22C38/12 ; C22C38/14 ; C22C7/00 ; B22D27/02 ; B32B15/00

Abstract:
Provided is a galvanized steel sheet having a tensile strength of 770 MPa or more including a steel sheet portion, and a plated layer formed on the surface of the steel sheet portion, in which the plated layer is a galvanized plated layer or an galvannealed plated layer, the steel sheet portion has a soft layer that directly adjoins the interface with the plated layer and an inside layer that is other than the soft layer, the thickness D of soft layer is 0.001% to 5% of thickness t of the steel sheet portion, and, when the hardness of the soft layer measured by nano-indentation method is indicated by H1, and the representative hardness of the steel sheet portion measured by the nano-indentation method is indicated by Ha in cross section that goes along the thickness direction of the steel sheet portion, H1 is 5% to 75% of Ha.
Public/Granted literature
- US20120152411A1 HIGH-STRENGTH GALVANIZED STEEL SHEET AND METHOD OF MANUFACTURING THE SAME Public/Granted day:2012-06-21
Information query
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