초록 ▼

Solid die-cast articles are prepared from a charge of a bulk-solidifying amorphous alloy. The charge is heated to an injection temperature and injected into a die-casting mold. The charge is cooled at a rate, about 500.degree. C. per second or less, such that its amorphous structure is retained in t

Solid die-cast articles are prepared from a charge of a bulk-solidifying amorphous alloy. The charge is heated to an injection temperature and injected into a die-casting mold. The charge is cooled at a rate, about 500.degree. C. per second or less, such that its amorphous structure is retained in the solidified article.

대표청구항 ▼

[ What is claimed is:] [1.] A method for preparing solid die-cast articles, comprising the steps of:providing a die-casting apparatus includinga die-casting mold having a metal injection port leading to a die mold cavity with an internal molding surface,a metal injector disposed to force metal into

[ What is claimed is:] [1.] A method for preparing solid die-cast articles, comprising the steps of:providing a die-casting apparatus includinga die-casting mold having a metal injection port leading to a die mold cavity with an internal molding surface,a metal injector disposed to force metal into the injection port, anda metal heater operable to heat a charge of metal and provide the heated charge to the metal injector;providing a charge of a bulk-solidifying amorphous alloy of sufficient volume to fill the die-casting mold cavity, the bulk-solidifying amorphous alloy having a linear coefficient of expansion of no greater than about 10.times.10.sup.-6 per .degree.C. when measured at a temperature below T.sub.g, where T.sub.g is the temperature corresponding to a viscosity of the bulk-solidifying amorphous alloy of about 10.sup.13 poise;heating the charge of the bulk-solidifying amorphous alloy to an injection temperature whereat its viscosity is less than about 10.sup.2 poise at the injection temperature using the metal heater;injecting the charge of heated bulk-solidifying amorphous alloy into the die-casting mold using the metal injector; andcooling the charge in the die-casting mold at a cooling rate such that the charge remains amorphous in structure.