Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Coating – specific composition or characteristic
Reexamination Certificate
2005-08-18
2011-10-25
Yu, Justine (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Coating, specific composition or characteristic
C416S19800R
Reexamination Certificate
active
08043068
ABSTRACT:
A Ni—Fe based super alloy having high strength and toughness at high temperatures even when used in high-temperature environments, and a process of producing the super alloy. A turbine disk using the super alloy, a process of producing the turbine disk, a turbine spacer using the super alloy, and a process of producing the turbine spacer, as well as a gas turbine are also provided. The Ni—Fe based super alloy contains not more than 0.03% by weight of C, 14-18% of Cr, 15-45% of Fe, 0.5-2.0% of Al, not more than 0.05% of N, 0.5 to 2.0% of Ti, 1.5-5.0% of Nb, and Ni as a main ingredient.
REFERENCES:
patent: 4514360 (1985-04-01), Giamei et al.
patent: 4979995 (1990-12-01), Hattori et al.
patent: 5593274 (1997-01-01), Carreno et al.
patent: 5860789 (1999-01-01), Sekihara et al.
patent: 6053701 (2000-04-01), Ichiryu et al.
patent: 6315846 (2001-11-01), Hibner et al.
patent: 6464461 (2002-10-01), Wilson et al.
patent: 6491495 (2002-12-01), Marushima et al.
patent: 6746208 (2004-06-01), Marushima et al.
patent: 1 486 578 (2004-12-01), None
patent: 62044546 (1987-02-01), None
patent: 63-171856 (1988-07-01), None
patent: 07-138719 (1995-05-01), None
patent: 10-226837 (1998-08-01), None
patent: 2004-036469 (2004-02-01), None
Imano, Shinya, “Mechanical Property and Miscrostructure of low Nb and High Al Ni-Fe Base Superallow (IN706)”, CAMP-ISIJ, vol. 15, 2003, p. 535.
Heino, S. et al, “Cyclic Deformation and Fatigue Behaviour of 7Mo-0.5N Superaustenitic Stainless Steel-Stress-Strain Relations and Fatigue Life”, Acta mater. 49, 2001, pp. 339-347.
G.I. Nosova et al, “Decomposition of the Supersaturated Solid Solution in Ni-Cr-Fe-Nb-Al Alloys and Their Heat Treatment”, Metal Science and Heat Treatment, 33(1991) May/June, Nos. 5/6, pp. 376-379.
Doi Hiroyuki
Imano Shinya
Sakurai Shigeo
Takehara Isao
Eastman Aaron R
Hitachi , Ltd.
Mattingly & Malur, PC
Yu Justine
LandOfFree
Ni-Fe based super alloy, process of producing the same and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ni-Fe based super alloy, process of producing the same and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ni-Fe based super alloy, process of producing the same and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4280030