Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1996-07-17
1999-04-27
Larson, Lowell A.
Metal working
Method of mechanical manufacture
Assembling or joining
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.
Bakke Eric
Johnson William L.
Peker Atakan
Amorphous Technologies International
California Institute of Technology
Garmong Gregory
Larson Lowell A.
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