Thick-section metal forming via friction stir processing

Details Thick-section metal forming via friction stir processing Thick-section metal forming via friction stir processing

2005-03-15

2005-03-15

Stoner, Kiley S. (Department: 1725)

Metal fusion bonding

Process

Using dynamic frictional energy

C072S068000, C148S564000

Reexamination Certificate

active

06866180

ABSTRACT:
Friction stir processing (FSP) modifies the surface microstructure of metals so that thick-section metal workpieces can be bent over large angles without formation of surface cracks. A thick 2519-T8 aluminum plate (25.4 mm thick and 50.8 mm wide) was friction stir processed across the pre-tensile surface to a depth of 6.3 mm, and was then bent at room temperature over a punch with radius 38.1 mm into a v-shaped die to an 80° bend angle. Whereas unprocessed workpieces of this type exhibited surface cracking at 31° bend angle and failed at 40° bend angle, no cracking was evident for the friction stir processed workpiece up to 80° bend angle.

REFERENCES:
patent: 5971252 (1999-10-01), Rosen
patent: 6230957 (2001-05-01), Arbegast
patent: 6638381 (2003-10-01), Keener et al.
patent: 6660106 (2003-12-01), Babel et al.
patent: 6712916 (2004-03-01), Mishra et al.
patent: 6726085 (2004-04-01), Litwinski et al.
patent: 20020079351 (2002-06-01), Mishra et al.
patent: 20030111147 (2003-06-01), Keener et al.
patent: 20030218052 (2003-11-01), Litwinski
patent: 20040000576 (2004-01-01), Litwinski
patent: 20040004107 (2004-01-01), Litwinski
patent: 20040045335 (2004-03-01), Lindner et al.
Nicholas, Friction Processing Technologies, Advanced Materials & Processes, Jun. 1, 1999, pp. 69-71, Issue 155 (6), Publisher: ASM International, Materials Park, OH 44073.

Affiliated with

Also associated with

Rating

Thick-section metal forming via friction stir processing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thick-section metal forming via friction stir processing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thick-section metal forming via friction stir processing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3448144