A method for forming an amorphous alloy part, including: placing a master alloy on a melting platform; heating and melting the master alloy under vacuum to yield an alloy melt; stopping heating and allowing the alloy melt to cool to a temperature between a glass transition temperature and a liquidus temperature thereof; and press-forming and cooling the alloy melt, to form the amorphous alloy part.

According to the present invention, provided is a zirconium-based metal glass alloy including, in atomic %, 62% or more and 67% or less of zirconium (Zr), 1% or more and 5% or less of niobium (Nb), 0.5% or more and 2% or less of titanium (Ti), 12% or more and 15% or less of copper (Cu), 8% or more and 10% or less of nickel (Ni), and 7.5% or more and 8.5% or less of aluminum (Al), the zirconium-based metal glass alloy having a composition represented by Zr.sub.62-67Nb.sub.1-5Ti.sub.0.5-2Cu.sub.12-15Ni.sub.8-10Al.sub.7.5-8.5.

The invention relates to a method for producing a shaped part comprising a solid metallic glass. According to the method, a preform is shaped below the glass transition temperature and is then heated to a temperature above the glass transition temperature.

The invention relates to a method for producing a shaped part comprising a solid metallic glass. According to the method, a preform is shaped below the glass transition temperature and is then heated to a temperature above the glass transition temperature.

Disclosed is a method for producing a Heusler-based phase thermoelectric material using an amorphous phase precursor. More specifically disclosed is a method for producing a powder or bulk thermoelectric material having a microstructure including a Heusler-based phase with a thermoelectric effect by crystallization of an amorphous phase precursor prepared by a non-equilibrium processes. Also disclosed is a device using a Heusler-based phase thermoelectric material produced by the method. The method largely avoids the efficiency problems of conventional methods, including low productivity in scaling up caused by long annealing time, high annealing temperature, and contamination during nanopowder production, achieving improved process efficiency. In addition, the method enables efficient production of a thermoelectric material having a nano-sized microstructure that is difficult to produce by a conventional method.

Disclosed is a method for producing a Heusler-based phase thermoelectric material using an amorphous phase precursor. More specifically disclosed is a method for producing a powder or bulk thermoelectric material having a microstructure including a Heusler-based phase with a thermoelectric effect by crystallization of an amorphous phase precursor prepared by a non-equilibrium processes. Also disclosed is a device using a Heusler-based phase thermoelectric material produced by the method. The method largely avoids the efficiency problems of conventional methods, including low productivity in scaling up caused by long annealing time, high annealing temperature, and contamination during nanopowder production, achieving improved process efficiency. In addition, the method enables efficient production of a thermoelectric material having a nano-sized microstructure that is difficult to produce by a conventional method.

Disclosed are a composition for an Fe-based alloy and an Fe-based amorphous alloy powder, whereby a high-purity amorphous structure is maintained even after coating by thermal spraying or the like, but also various physical properties are improved. The composition for the Fe-based alloy includes iron, chromium, and molybdenum, wherein per 100 parts by weight of the iron, the chromium is contained in an amount of 25.4 to 55.3 parts by weight, the molybdenum is contained in an amount of 35.6 to 84.2 parts by weight, and at least one of carbon and boron is further contained.

Disclosed are a composition for an Fe-based alloy and an Fe-based amorphous alloy powder, whereby a high-purity amorphous structure is maintained even after coating by thermal spraying or the like, but also various physical properties are improved. The composition for the Fe-based alloy includes iron, chromium, and molybdenum, wherein per 100 parts by weight of the iron, the chromium is contained in an amount of 25.4 to 55.3 parts by weight, the molybdenum is contained in an amount of 35.6 to 84.2 parts by weight, and at least one of carbon and boron is further contained.

A method for production of an ingot of a bulk glass-forming alloy, comprising the steps of: Providing a homogeneous melt of a bulk glass-forming alloy; casting the homogeneous melt into a casting mould, whereby the casting mould does not cool down below the glass-transition temperature of the alloy at the contact surface to the melt for at least 5 seconds; and cooling down the melt below the glass transition temperature of the bulk glass-forming alloy while obtaining the ingot.

A method for production of an ingot of a bulk glass-forming alloy, comprising the steps of: Providing a homogeneous melt of a bulk glass-forming alloy; casting the homogeneous melt into a casting mould, whereby the casting mould does not cool down below the glass-transition temperature of the alloy at the contact surface to the melt for at least 5 seconds; and cooling down the melt below the glass transition temperature of the bulk glass-forming alloy while obtaining the ingot.