Invention Grant
- Patent Title: Cold-rolled steel sheet and process for production thereof
- Patent Title (中): 冷轧钢板及其制造方法
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Application No.: US13818351Application Date: 2011-08-22
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Publication No.: US09435013B2Publication Date: 2016-09-06
- Inventor: Kengo Hata , Toshiro Tomida , Norio Imai
- Applicant: Kengo Hata , Toshiro Tomida , Norio Imai
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Clark & Brody
- Priority: JP2010-186146 20100823
- International Application: PCT/JP2011/068854 WO 20110822
- International Announcement: WO2012/026419 WO 20120301
- Main IPC: C22C38/02
- IPC: C22C38/02 ; C22C38/18 ; C21D8/02 ; C21D9/46 ; C22C38/04 ; C22C38/00 ; C22C38/12 ; C22C38/14

Abstract:
A cold-rolled steel sheet having a refined structure in which grain growth during annealing is suppressed has a chemical composition containing, in mass percent, controlled amounts of carbon, manganese, niobium, titanium, vanadium, sol. Aluminum, chromium, molybdenum, boron, calcium, and REM and a microstructure which contains at least 50% by area of ferrite as a main phase, a second phase containing at least 10% by area of a low temperature transformation phase and 0-3% by area of retained austenite and which satisfies the following Equations (1)-(3), in addition to a particular texture, dm
Public/Granted literature
- US20140144553A1 COLD-ROLLED STEEL SHEET AND PROCESS FOR PRODUCTION THEREOF Public/Granted day:2014-05-29
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