Title:
MEDIUM-/HIGH-CARBON STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2015/133644
Kind Code:
A1
Abstract:
The medium-/high-carbon steel sheet according to one aspect of the present invention is a steel sheet containing, in mass%, C: 0.10-1.50%, Si: 0.01-1.00%, Mn: 0.01-3.00 mass%, P: 0.0001-0.1000%, and S: 0.001-0.1000%, with the remainder having components comprising Fe and impurities, wherein the total volume fraction of martensite, bainite, pearlite, and residual austenite is 5% or less, the remainder being a composition of ferrite and carbide; the spheroidizing ratio of the carbide particles is 70 to 99%, inclusive; and the number of carbide particles that include crystal interface misorientation of 5° or greater, expressed as a proportion of the carbide particles, is 20% or less with respect to the total number of carbide particles.
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Inventors:
TAKEDA KENGO (JP)
TOMOKIYO TOSHIMASA (JP)
TSUKANO YASUSHI (JP)
ARAMAKI TAKASHI (JP)
TOMOKIYO TOSHIMASA (JP)
TSUKANO YASUSHI (JP)
ARAMAKI TAKASHI (JP)
Application Number:
PCT/JP2015/056825
Publication Date:
September 11, 2015
Filing Date:
March 09, 2015
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
C22C38/00; C21D9/48; C22C38/60
Foreign References:
| JP2007119883A | 2007-05-17 | |||
| JP2008291304A | 2008-12-04 | |||
| JP2007270331A | 2007-10-18 | |||
| JP2012062496A | 2012-03-29 | |||
| JP2007031762A | 2007-02-08 | |||
| JP2003183775A | 2003-07-03 |
Other References:
See also references of EP 3115475A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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