Abstract: An embodiment relates to a method comprising overmolding a bulk-solidifying amorphous alloy on a preform of another material than the bulk-solidifying amorphous alloy to form a bulk-solidifying amorphous alloy overmolded preform. Another embodiment relates to an article comprising an overmolded shell comprising the bulk-solidifying amorphous alloy on a preform of another material than the bulk-solidifying amorphous alloy. The preform could be made of a crystalline or amorphous metal or alloy such as aluminum, stainless steel, copper or beryllium.

Abstract: Disclosed is a removably interlocking barrel hinge assembly that allows for relative rotation of parts as well as disconnection of the parts. Connectors of the hinge assembly include tabs and recesses that are configured to align and rotate relative to one another. Overlapping of tabs prevents separation in the axial direction, while still allowing for rotation. When disconnection of the parts is desired, the tabs and recesses of the connectors can be aligned, and then pulled apart. The hinge assembly provides in one instance 180 degrees of relative rotation. It may be implemented in a number of devices, including knives and surgical instruments, for example.

Abstract: Described herein is a method of forming a 3D investment mold using a layer-by-layer construction (3D printing). The mold is configured for receipt of a molten alloy having a composition configured to form a bulk metallic glass (BMG) on cooling. The mold has a hollow interior between inner and outer walls. The hollow interior receives the molten alloy for molding it between the inner and outer walls of the mold. A method of casting using the 3D investment mold is also disclosed, which may include filling the mold with molten alloy, removing bubbles, quenching the molten alloy in the mold, and then removing the mold.

Abstract: Described herein is an injection molding or die casting machine having an ultrasonic vibration generator associated therewith that is configured to apply ultrasonic vibrations during melting and/or injection of the molten material (e.g., molten alloy). The ultrasonic vibrations may be applied to molten material via the plunger tip of the plunger in the machine, and/or the mold and/or the vessel, for example. The ultrasonic vibration may be applied during plunger tip movement so that the molten material vibrates ultrasonically during melting and injection. A connector may be connected to the ultrasonic vibration generator and the plunger. Channels may be provided in the plunger tip and/or vessel to accommodate a cooling fluid during melting and injection.

Abstract: An embodiment relates to a method comprising overmolding a bulk-solidifying amorphous alloy on a preform of another material than the bulk-solidifying amorphous alloy to form a bulk-solidifying amorphous alloy overmolded preform. Another embodiment relates to an article comprising an overmolded shell comprising the bulk-solidifying amorphous alloy on a preform of another material than the bulk-solidifying amorphous alloy. The preform could be made of a crystalline or amorphous metal or alloy such as aluminum, stainless steel, copper or beryllium.