An apparatus and method of uniformly heating, rheologically softening, and thermoplastically forming metallic glasses rapidly into a net shape using a rapid capacitor discharge forming (RCDF) tool are provided. The RCDF method utilizes the discharge of electrical energy stored in a capacitor to uniformly and rapidly heat a sample or charge of metallic glass alloy to a predetermined “process temperature” between the glass transition temperature of the amorphous material and the equilibrium melting point of the alloy in a time scale of several milliseconds or less. Once the sample is uniformly heated such that the entire sample block has a sufficiently low process viscosity it may be shaped into high quality amorphous bulk articles via any number of techniques including, for example, injection molding, dynamic forging, stamp forging, and blow molding in a time frame of Less than 1 second.

An apparatus and method of uniformly heating, rheologically softening, and thermoplastically forming metallic glasses rapidly into a net shape using a rapid capacitor discharge forming (RCDF) tool are provided. The RCDF method utilizes the discharge of electrical energy stored in a capacitor to uniformly and rapidly heat a sample or charge of metallic glass alloy to a predetermined “process temperature” between the glass transition temperature of the amorphous material and the equilibrium melting point of the alloy in a time scale of several milliseconds or less. Once the sample is uniformly heated such that the entire sample block has a sufficiently low process viscosity it may be shaped into high quality amorphous bulk articles via any number of techniques including, for example, injection molding, dynamic forging, stamp forging, and blow molding in a time frame of Less than 1 second.

An amorphous alloy magnetic core including a layered body in which amorphous alloy thin strips are layered one on another, the layered body having one end face and another end face in a width direction of the amorphous alloy thin strips, an inner peripheral surface and an outer peripheral surface orthogonal to a layering direction of the amorphous alloy thin strips, and a hole passing through from a part of the one end face as a starting point, the width direction corresponding to a depth direction of the hole.

A soft magnetic alloy thin strip which has high saturation magnetic flux density and low coercivity, which enables a core with high space factor and high saturation magnetic flux density. A soft magnetic alloy thin strip including a main component that has a composition formula (Fe.sub.(1−(α+β))X1.sub.αX2.sub.β).sub.(1−(a+b+c+d+e+f))M.sub.aB.sub.bP.sub.cSi.sub.dC.sub.eS.sub.f. In the formula, X1, X2 and M are selected from a specific element group; 0≤a≤0.140, 0.020≤b≤0.200, 0≤c≤0.150, 0≤d≤0.090, 0≤e≤0.030, 0≤f≤0.030, α≥0, β≥0, and 0≤α+β≤0.50; and at least one of a, c and d is larger than 0. The strip has a structure that is composed of an Fe-based nanocrystal; and the surface roughness of a release surface satisfies 0.85≤Ra.sub.e/Ra.sub.c≤1.25 (wherein Ra.sub.c is the average of arithmetic mean roughnesses in the central portion, and Ra.sub.e is the average in the edge portion).

A soft magnetic alloy thin strip which has high saturation magnetic flux density and low coercivity, which enables a core with high space factor and high saturation magnetic flux density. A soft magnetic alloy thin strip including a main component that has a composition formula (Fe.sub.(1−(α+β))X1.sub.αX2.sub.β).sub.(1−(a+b+c+d+e+f))M.sub.aB.sub.bP.sub.cSi.sub.dC.sub.eS.sub.f. In the formula, X1, X2 and M are selected from a specific element group; 0≤a≤0.140, 0.020≤b≤0.200, 0≤c≤0.150, 0≤d≤0.090, 0≤e≤0.030, 0≤f≤0.030, α≥0, β≥0, and 0≤α+β≤0.50; and at least one of a, c and d is larger than 0. The strip has a structure that is composed of an Fe-based nanocrystal; and the surface roughness of a release surface satisfies 0.85≤Ra.sub.e/Ra.sub.c≤1.25 (wherein Ra.sub.c is the average of arithmetic mean roughnesses in the central portion, and Ra.sub.e is the average in the edge portion).

Described herein is a crucible with a rod fused thereon to optimize pouring of molten material, and method of using the same. The crucible has a body configured for receipt of an amorphous alloy material in a vertical direction, and the rod extends in a horizontal direction from the body. The body of the crucible and the rod are formed from silica or quartz. The rod may be fused to the body of the crucible and provided off a center axis so that pouring molten material is improved when the crucible is rotated.

Embodiments disclosed herein relate to production of amorphous alloys having compositions of iron, chromium, molybdenum, carbon and boron for usage in additive manufacturing, such as in layer-by-layer deposition to produce multi-functional parts. Such parts demonstrate ultra-high strength without sacrificing toughness and also maintain the amorphous structure of the materials during and after manufacturing processes. An Amorphous alloy composition has a formula Fe.sub.100-(a+b+c+d)Cr.sub.aMo.sub.bC.sub.cB.sub.d, wherein a, b, c and d represent an atomic percentage, wherein: a is in the range of 10 at. % to 35 at. %; b is in the range of 10 at. % to 20 at. %; c is in the range of 2 at. % to 5 at. %; and d is in the range of 0.5% at. % to 3.5 at. %.

Embodiments disclosed herein relate to production of amorphous alloys having compositions of iron, chromium, molybdenum, carbon and boron for usage in additive manufacturing, such as in layer-by-layer deposition to produce multi-functional parts. Such parts demonstrate ultra-high strength without sacrificing toughness and also maintain the amorphous structure of the materials during and after manufacturing processes. An Amorphous alloy composition has a formula Fe.sub.100-(a+b+c+d)Cr.sub.aMo.sub.bC.sub.cB.sub.d, wherein a, b, c and d represent an atomic percentage, wherein: a is in the range of 10 at. % to 35 at. %; b is in the range of 10 at. % to 20 at. %; c is in the range of 2 at. % to 5 at. %; and d is in the range of 0.5% at. % to 3.5 at. %.

Systems and methods in accordance with embodiments of the invention implement layers of devitrified metallic glass-based materials. In one embodiment, a method of fabricating a layer of devitrified metallic glass includes: applying a coating layer of liquid phase metallic glass to an object, the coating layer being applied in a sufficient quantity such that the surface tension of the liquid phase metallic glass causes the coating layer to have a smooth surface; where the metallic glass has a critical cooling rate less than 10.sup.6 K/s; and cooling the coating layer of liquid phase metallic glass to form a layer of solid phase devitrified metallic glass.

A heat treatment apparatus for a laminated body of amorphous alloy ribbon includes: a lamination jig that holds the laminated body of amorphous alloy ribbon; two heating plates that sandwich the laminated body from upper and lower surfaces in a lamination direction without coming into contact with the lamination jig; and a heating control apparatus that controls a heating temperature of the two heating plates.