Invention Grant
- Patent Title: Galvannealed layer and steel sheet comprising the same, and method for producing the same
- Patent Title (中): 加热熔融层及其制造方法及其制造方法
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Application No.: US14235155Application Date: 2012-07-27
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Publication No.: US09551057B2Publication Date: 2017-01-24
- Inventor: Hiroyuki Kawata , Naoki Maruyama , Akinobu Murasato , Akinobu Minami , Takeshi Yasui
- Applicant: Hiroyuki Kawata , Naoki Maruyama , Akinobu Murasato , Akinobu Minami , Takeshi Yasui
- 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: JP2011-167779 20110729
- International Application: PCT/JP2012/069229 WO 20120727
- International Announcement: WO2013/018726 WO 20130207
- Main IPC: B32B15/00
- IPC: B32B15/00 ; C23C2/28 ; C23C2/06 ; B32B15/01 ; C22C18/00 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C21D8/04
Abstract:
Provided are: a galvannealed steel sheet, improved in the adhesiveness of a plated layer with a base steel sheet, as a galvannealed steel sheet, prepared by using a high-strength steel sheet as a base material; and a method for producing the galvannealed steel sheet. A galvannealed layer is formed on the base steel sheet including a high-strength steel having a predetermined composition. The average amount of Fe in the galvannealed layer is 8.0 to 12.0%. The absolute value of a difference (ΔFe) between the amount of Fe in the vicinity of an interface with the base steel sheet and the amount of Fe in the vicinity of the external surface of the plated layer in the plated layer is 0.0 to 3.0%.
Public/Granted literature
- US20140193665A1 GALVANNEALED LAYER AND STEEL SHEET COMPRISING THE SAME, AND METHOD FOR PRODUCING THE SAME Public/Granted day:2014-07-10
Information query
