Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate
2006-07-11
2006-07-11
Wyszomierski, George (Department: 1742)
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
C148S675000
Reexamination Certificate
active
07074284
ABSTRACT:
In a heat treatment process for a single-crystal or directionally solidified material body comprising a nickel-based superalloy, the material body is solution-annealed and then at a first temperature γ′ particles of greater than 1 μm are precipitated in a proportion by volume with Vtot−V1of less than 50%, where Vtotis the total amount of γ′ particles after complete heat treatment and V1is the proportion of the γ′ particles which is greater than 1 μm, and at least at a second temperature ‘γ’ particles of less than 1 μm are precipitated. The γ′ particles are preferably precipitated in a size of 2 pin or more with a proportion by volume of 0.25<(Vtot−V1)/(100−V1)<0.55 at the first temperature. The proportion by volume Vtotof the γ′ particles will be at least 50%.
REFERENCES:
patent: 4459160 (1984-07-01), Meetham et al.
patent: 4512817 (1985-04-01), Duhl et al.
patent: 4643782 (1987-02-01), Harris et al.
patent: 4830679 (1989-05-01), Yamagata et al.
patent: 5100484 (1992-03-01), Wukusick et al.
patent: 5154884 (1992-10-01), Wukusick et al.
patent: 5605584 (1997-02-01), DeLuca et al.
patent: 5759301 (1998-06-01), Konter et al.
patent: 6673308 (2004-01-01), Hino et al.
patent: 0076360 (1983-04-01), None
patent: 0155827 (1985-09-01), None
patent: 0555124 (1993-08-01), None
patent: 0937784 (1999-08-01), None
patent: 2235697 (1991-03-01), None
K. Harris et al., Development of Two Rhenium-Containing Superalloys for Single-Crystal Blade and Directionally Solidified Vane Applications in Advanced Turbine Engines, Journal of Materials Engineering & Performance, 1993, pp. 481-487, vol. 2(4), Materials Park, Ohio, USA.
Nazmy Mohamed
Roesler Joachim
Schnell Alexander
Toennes Christoph
ALSTOM Technology LTD
Buchanan & Ingersoll PC
Wyszomierski George
LandOfFree
Heat treatment method for bodies that comprise a nickel... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Heat treatment method for bodies that comprise a nickel..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat treatment method for bodies that comprise a nickel... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3613115