Title:
FORMED PRODUCT AND METHOD FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2004/035851
Kind Code:
A1
Abstract:
A formed product, characterized in that it is produced by using, as a material, a steel having a superfine structure comprising ferrite grains having an average grain diameter of 3 μm or less and by a method comprising only a forming step and including none of refining steps; and a method for producing the above formed product with ease. The formed product contains no alloying element and has been subjected to no refining step, and has been imparted with high strength and high toughness by the above superfine structure.
Inventors:
TORIZUKA SHIRO (JP)
NAGAI KOTOBU (JP)
MURAMATSU EIJIRO (JP)
SUZUKI YOSHIYUKI (JP)
NAGAI KOTOBU (JP)
MURAMATSU EIJIRO (JP)
SUZUKI YOSHIYUKI (JP)
Application Number:
PCT/JP2003/013309
Publication Date:
April 29, 2004
Filing Date:
October 17, 2003
Export Citation:
Assignee:
NAT INST FOR MATERIALS SCIENCE (JP)
TORIZUKA SHIRO (JP)
NAGAI KOTOBU (JP)
MURAMATSU EIJIRO (JP)
SUZUKI YOSHIYUKI (JP)
TORIZUKA SHIRO (JP)
NAGAI KOTOBU (JP)
MURAMATSU EIJIRO (JP)
SUZUKI YOSHIYUKI (JP)
International Classes:
B21J1/04; B21K1/46; C22C38/00; C22C38/02; C22C38/04; C22C38/06; F16B35/00; F16B35/04; (IPC1-7): C22C38/00; B21J1/04; C22C38/06
Foreign References:
| JPH1053813A | 1998-02-24 | |||
| JP2001234239A | 2001-08-28 |
Other References:
See also references of EP 1559804A4
Attorney, Agent or Firm:
Nishizawa, Toshio (11-1 Minami-Aoyama 6-chom, Minato-ku Tokyo, JP)
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