Die-formed amorphous metallic articles and their fabrication

Metal working – Method of mechanical manufacture – Assembling or joining

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

72700, 148561, 473342, B21K 1700

Patent

active

058966420

ABSTRACT:
A metallic article is fabricated by providing a die and a piece of a bulk-solidifying amorphous metallic alloy having a glass transition temperature. The bulk-solidifying amorphous metallic alloy is heated to a forming temperature of from about 0.75 T.sub.g to about 1.2 T.sub.g and forced into the die cavity at the forming temperature under an external pressure of from about 260 to about 40,000 pounds per square inch, thereby deforming the piece of the bulk-solidifying amorphous metallic alloy to a formed shape that fills the die cavity. Preferably, a pressure is applied to the piece of the bulk-solidifying amorphous metallic alloy as it is heated, and the heating rate is at least about 0.1.degree. C. per second. The die may be a male die or a female die. When the die has a re-entrant comer therein, the formed shape of the bulk-solidifying amorphous metallic alloy is mechanically locked to the die.

REFERENCES:
patent: 2190611 (1940-02-01), Sembdner
patent: 4529457 (1985-07-01), Kushnick
patent: 4854370 (1989-08-01), Nakamura
patent: 5117894 (1992-06-01), Katahira
patent: 5288344 (1994-02-01), Peker et al.
patent: 5296059 (1994-03-01), Masumoto et al.
patent: 5306463 (1994-04-01), Horimura
patent: 5312495 (1994-05-01), Masumoto et al.
patent: 5324368 (1994-06-01), Masumoto et al.
patent: 5390724 (1995-02-01), Yamauchi et al.
patent: 5564994 (1996-10-01), Chang
patent: 5589012 (1996-12-01), Hobby et al.
A. Kato et al., "Production of Bulk Amorphous Mg.sub.85 Y.sub.10 Cu.sub.5 Alloy by Extrusion of Atomized Amorphous Powder," Materials. Trans., JIM, vol. 35, No. 2 (1994), pp. 125-129.
Y. Kawamura et al., "Full strength compacts by extrusion of glass metal powder at the supercooled liquid state," Appl. Phys. Lett., vol. 67 (14) (1995), pp. 2008-2010.
"Metals Handbook", vol. 5, 8.sup.th edition, pp. 285-306 (1970).
A. Inoue et al., "Mg-Cu-Y Bulk Amorpohous Alloys with High Tensile Strength Produced by a High-Pressure Die Casting Method," Materials Transactions, JIM, vol. 33, No. 10, pp. 937-945 (1992).
A. Inoue et al., "Bulky La-A1-TM (TM=Transition Metal) Amorphous Alloys with High Tensile Strength Produced by a High-Pressure Die Casting Method," Materials Transactions, JIM, vol. 34, No. 4, pp. 351-358 (1993).
K. Amiya et al., "Mechanical strength and thermal stability of Ti-based amorphous alloys with large glass-forming ability," Materials Science and Engineering, A179/a180, pp. 692-696 (1994).
Interbike Buyer, 1995 Interbike Expos Show Catalog.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Die-formed amorphous metallic articles and their fabrication does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Die-formed amorphous metallic articles and their fabrication, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Die-formed amorphous metallic articles and their fabrication will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-676303

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.