초록 ▼

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 d

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.

대표청구항 ▼

[ What is claimed is:] [1.] A method for fabricating a metallic article, comprising the steps ofproviding a die having an interior die cavity therein;providing a piece of a bulk-solidifying amorphous metallic alloy having a glass transition temperature T.sub.g ;heating the piece of the bulk-solidify

[ What is claimed is:] [1.] A method for fabricating a metallic article, comprising the steps ofproviding a die having an interior die cavity therein;providing a piece of a bulk-solidifying amorphous metallic alloy having a glass transition temperature T.sub.g ;heating the piece of the bulk-solidifying amorphous metallic alloy from a lower temperature to a die-forming temperature with a load simultaneously applied to the bulk-solidifying amorphous metallic alloy during at least a portion of the step of heating; andforcing the piece of the bulk-solidifying amorphous metallic alloy into the die cavity at the forming temperature, thereby deforming the piece of the bulk-solidifying amorphous metallic alloy to a formed shape that substantially fills the die cavity.