发明公开
- 专利标题： Ultra-fine texture steel and method for producing it
- 专利标题（中）： 超细组织钢及其制造方法
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申请号： EP98307632.4申请日： 1998-09-21
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公开(公告)号： EP0903412A3公开(公告)日： 2001-01-24
- 发明人: Torizuka, Shino, National Res. Inst. for Metals , Tsuzaki, Kaneaki, National Res. Inst. for Metals , Nagai, Kotobu, National Res. Inst. for Metals , Umezawa, Osamu, National Res. Inst. for Metals
- 申请人： NATIONAL RESEARCH INSTITUTE FOR METALS
- 申请人地址： 1-2-1 Sengen Tsukuba-shi, Ibaraki JP
- 专利权人： NATIONAL RESEARCH INSTITUTE FOR METALS
- 当前专利权人： NATIONAL RESEARCH INSTITUTE FOR METALS
- 当前专利权人地址： 1-2-1 Sengen Tsukuba-shi, Ibaraki JP
- 代理机构： Matthews, Derek Peter
- 优先权： JP25668297 19970922; JP25680297 19970922; JP5254598 19980304
- 主分类号： C21D7/13
- IPC分类号： C21D7/13 ; C21D8/00
摘要：
The invention provides an ultra-fine grain steel comprising fine ferrite grains as oriented at random and surrounded by large angle grain boundaries. The steel comprises fine ferrite grains having a mean grain size of not larger than 3.0 µm and surrounded by large angle grain boundaries having an misorientation not smaller than 15°.
公开/授权文献
- EP0903412A2 Ultra-fine texture steel and method for producing it 公开/授权日：1999-03-24
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