Title:
HIGH-STRENGTH STAINLESS STEEL SHEET HAVING EXCELLENT FATIGUE CHARACTERISTICS, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2017/056618
Kind Code:
A1
Abstract:
Problem: To realize a thin plate material having a distribution state of nonmetallic inclusions effective at improving fatigue resistance characteristics in a type of stainless steel having a high Si content in which deformation-induced martensite is generated. Solution: A thin steel plate comprising, in terms of mass%, 0.010-0.200% C, over 2.00% and no more than 4.00% Si, 0.01-3.00% Mn, 3.00% to less than 10.00% Ni, 11.00-20.00% Cr, 0.010-0.200% N, 0-3.00% Mo, 0-1.00% Cu, 0-0.008% Ti, and 0-0.008% Al, the remainder being Fe and unavoidable impurities, the distance between particles in a rolling direction being 20 µm or less, the distance between particles in a plate thickness direction being 10 µm or less, and the number density of nonmetallic inclusions having a length in the rolling direction of 40 µm or greater being 3.0 inclusions/mm2 or less in an L cross-section.
Inventors:
EHARA YASUHIRO (JP)
SAITO SHUN (JP)
MATSUBAYASHI HIROYASU (JP)
SAITO SHUN (JP)
MATSUBAYASHI HIROYASU (JP)
Application Number:
PCT/JP2016/069952
Publication Date:
April 06, 2017
Filing Date:
July 05, 2016
Export Citation:
Assignee:
NISSHIN STEEL CO LTD (JP)
International Classes:
C22C38/00; B21B3/02; C21C7/00; C21C7/04; C21C7/068; C21C7/076; C21D9/46; C22C38/58
Foreign References:
| JP2015074807A | 2015-04-20 | |||
| JP2002275591A | 2002-09-25 | |||
| JPH04202643A | 1992-07-23 | |||
| JP2005290449A | 2005-10-20 | |||
| JP2002167647A | 2002-06-11 | |||
| JPH0641686A | 1994-02-15 |
Other References:
See also references of EP 3358029A4
Attorney, Agent or Firm:
KOMATSU Takashi (JP)
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