Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1993-06-07
1994-07-12
Roy, Upendra
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148564, 148670, 148671, 420902, C22F 100, C22C 1400
Patent
active
053285301
ABSTRACT:
A method for hot forging coarse grain materials to enhance hot workability and to refine microstructure is described which comprises the steps of imposing minimum initial deformation at low strain rate to effect initial dynamic recrystallization and grain refinement without fracture, and thereafter increasing the deformation rate to recrystallize the material and further refine grain structure. Depending on the deformation required to achieve full recrystallization at a given rate, deformation rate can be increased a number of times to further refine grain structure.
REFERENCES:
patent: 4579602 (1986-04-01), Paulonis et al.
patent: 4617817 (1986-10-01), Gegel et al.
patent: 4737206 (1988-04-01), Iwai
patent: 4821554 (1989-04-01), Morgan et al.
patent: 4867807 (1989-09-01), Torisaka et al.
patent: 4935069 (1990-06-01), Kuboki et al.
patent: 5026520 (1991-06-01), Bhowal et al.
patent: 5055257 (1991-10-01), Chakrabarti et al.
patent: 5215600 (1993-06-01), Bertolini et al.
patent: 5217548 (1993-06-01), Kuboki et al.
patent: 5232661 (1993-08-01), Matsuo et al.
Hashimoto et al. in Microstructure/Property . . . TiAl and Alloys, eds. Kim et al., AIME, 1991, pp. 253-262.
MasahashiMahahi et al, MAT. Res. Soc. Symp. Proc. #213, 1991, pp. 795-800.
Fukutomi et al. Z. Metallkde, 81 (1990) 272.
Weiss et al. Met. Trans. 17A (1986) 1935.
McQuay Paul A.
Semiatin Sheldon L.
Kundert Thomas L.
Roy Upendra
Scearce Bobby D.
The United States of America as represented by the Secretary of
LandOfFree
Hot forging of coarse grain alloys does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hot forging of coarse grain alloys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hot forging of coarse grain alloys will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-393455