Title:
METASTABLE AUSTENITIC STAINLESS STEEL BAND OR SHEET AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/209142
Kind Code:
A1
Abstract:
Provided are a metastable austenitic stainless steel band or sheet with both high strength and high ductility, and a manufacturing method therefor. A metastable austenitic stainless steel band or sheet: contains, in mass%, C; 0.05-0.15%, Si: 0.05-1%, Mn: 2% or less, Cr: 16-18%, Ni: 4-11%, Mo: 2.5-3.5%, the balance being made of Fe and unavoidable impurities; has a two-phase structure of α' phases and γ phases, the γ phases being configured from γT phases and γR phases, the total of the γT phases and γR phases being 15-50 volume%, and the γT phase area ratio defined in equation (2) (=100×(total area ratio of γT phases occupying the entire observed area) being 1% to 20%; and has characteristics that satisfy 0.2% yield strength (YS) being 1400 N/mm2-1900 N/mm2 and "YS×EL value" (YS∙EL) being 21000-48000.
Inventors:
MATSUMURA YUTA (JP)
OGAWA KYOUHEI (JP)
TANAKA SHINICHI (JP)
HOSOYA YOSHIHIRO (JP)
HIRATA TATSUMI (JP)
OGAWA KYOUHEI (JP)
TANAKA SHINICHI (JP)
HOSOYA YOSHIHIRO (JP)
HIRATA TATSUMI (JP)
Application Number:
PCT/JP2017/020147
Publication Date:
December 07, 2017
Filing Date:
May 30, 2017
Export Citation:
Assignee:
TOKUSHU KINZOKU EXCEL CO LTD (JP)
International Classes:
C22C38/00; C21D9/46; C22C38/58
Foreign References:
| JP2005320611A | 2005-11-17 | |||
| JP2005320612A | 2005-11-17 | |||
| JP2007113068A | 2007-05-10 | |||
| JP2002173740A | 2002-06-21 | |||
| JP2012172157A | 2012-09-10 | |||
| JPS5913028A | 1984-01-23 | |||
| JPS59129731A | 1984-07-26 |
Attorney, Agent or Firm:
S & S INTERNATIONAL PPC (JP)
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