Title:
BLADE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2018/051854
Kind Code:
A1
Abstract:
Provided is a blade material having high strength.
A blade material which contains, in % by mass, 0.5 to 0.8% of C, 1.0% or less of Si, 1.0% or less of Mn, 11 to 15% of Cr, 0.1 to 0.8% of V and a remainder made up by Fe and unavoidable impurities, and has a thickness of 0.5 mm or less, wherein the texture of the blade material as observed after polishing the surface thereof is composed of a ferrite and carbides, the carbides have an average particle diameter of 0.5 μm or less, and the content ratio of a V-containing carbide relative to the total amount of the carbides is 50% or less in terms of a visual field area ratio.
By subjecting the blade material to a thermal treatment for quenching and tempering purposes, it becomes possible to produce a blade material that has a martensitic structure as the metal texture thereof and also has a tensile strength of 2050 MPa or more.
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Inventors:
YAMAMURA KAZUHIRO (JP)
Application Number:
PCT/JP2017/032031
Publication Date:
March 22, 2018
Filing Date:
September 06, 2017
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
C22C38/00; C22C38/24; C21D1/18; C21D9/18; C21D9/46
Foreign References:
| JPS484694B1 | 1973-02-10 | |||
| JPS61276953A | 1986-12-06 | |||
| JPS62116755A | 1987-05-28 | |||
| JP2014070229A | 2014-04-21 | |||
| JPS63250440A | 1988-10-18 | |||
| JP2007063635A | 2007-03-15 |
Other References:
See also references of EP 3514251A4
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