Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate
2005-07-19
2005-07-19
Sheehan, John P. (Department: 1742)
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
C148S670000
Reexamination Certificate
active
06918974
ABSTRACT:
An alpha-beta titanium alloy workpiece, preferably furnished in the form of a cast ingot, is processed by mechanically working in the beta phase field and in the alpha-beta phase field, and thereafter quenching from the beta phase field. The workpiece is thereafter mechanically worked at a first alpha-beta phase field temperature in the alpha-beta phase field and quenched from the first alpha-beta phase field temperature. The workpiece is thereafter mechanically worked at a second alpha-beta phase field temperature in the alpha-beta phase field, wherein the second alpha-beta phase field temperature is lower than the first alpha-beta phase field temperature, and optionally quenched from the second alpha-beta phase field temperature. The resulting microstructure is a distribution of globularized coarse alpha-phase particles and globularized fine alpha-phase particles in fine transformed beta grains.
REFERENCES:
patent: 6190473 (2001-02-01), Martin
patent: 6284070 (2001-09-01), Gorman et al.
patent: 6332935 (2001-12-01), Gorman et al.
patent: 6387197 (2002-05-01), Bewlay et al.
M. Brun et al., “Demands to Bimodal Structure with Optimal Combination of Mechanical Properties and Regimes for its Development,”Titanium 95, Science and Technology, 1995, pp. 2421-2429.
General Electric Company
McNees Wallace & Nurick LLC
Sheehan John P.
LandOfFree
Processing of alpha-beta titanium alloy workpieces for good... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Processing of alpha-beta titanium alloy workpieces for good..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Processing of alpha-beta titanium alloy workpieces for good... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3387416