High corrosion resistance precipitation hardened martensitic...

Details High corrosion resistance precipitation hardened martensitic... High corrosion resistance precipitation hardened martensitic...

2011-07-26

2011-07-26

Silverman, Stanley (Department: 1736)

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

C148S326000, C148S605000, C148S606000, C420S034000, C420S060000, C420S061000, C420S067000

Reexamination Certificate

active

07985306

ABSTRACT:
A precipitation-hardened stainless steel alloy comprises, by weight: about 14.0 to about 16.0 percent chromium; about 6.0 to about 7.0 percent nickel; about 1.25 to about 1.75 percent copper; about 0.5 to about 2.0 percent molybdenum; about 0.025 to about 0.05 percent carbon; niobium in an amount greater than about twenty times to about twenty-five times that of carbon; and the balance iron and incidental impurities. The alloy has an aged microstructure and an ultimate tensile strength of at least about 1100 MPa and a Charpy V-notch toughness of at least about 69 J. The aged microstructure includes martensite and not more than about 10% reverted austenite and is useful for making turbine airfoils.

REFERENCES:
patent: 3574601 (1971-04-01), Myers et al.
patent: 6743305 (2004-06-01), Short
patent: 2003/0102057 (2003-06-01), Short
patent: 2700574 (1977-07-01), None
patent: 0649915 (1995-04-01), None
patent: 05331600 (1993-12-01), None
patent: 08144023 (1996-06-01), None
patent: 2001279385 (2001-10-01), None
patent: 0179576 (2001-10-01), None
Machine translation of JP 08144023 A.
“Precipitation-Hardening Martensitic Stainless Steels.” ASM Handbook. 2002.
EP Search Report for EP Application Serial No. 10151738.1; Mailing Date of Apr. 28, 2010.

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