Abstract:
One embodiment provides a method comprising: providing a sample comprising a bulk amorphous alloy; scanning ultrasonically at least a portion of the sample to determine a parameter of the sample in the portion; and comparing the parameter to a predetermined standard to derive a property related to the sample.
Abstract:
Embodiments herein relate to a method of making roll formed objects of a bulk solidifying amorphous alloy comprising a metal alloy, and articles thereof. The roll forming includes forming a portion of the bulk solidifying amorphous alloy at a temperature greater than a glass transition temperature (Tg) of the metal alloy. The roll forming is done such that a time-temperature profile of the portion during the roll forming does not traverse through a region bounding a crystalline region of the metal alloy in a time-temperature-transformation (TTT) diagram of the metal alloy.
Abstract:
A method comprising: constructing a master curve plot comprising a plurality of reference curves, each reference curve representing a relationship between volume and temperature for one of a plurality of reference alloy samples having a chemical composition and various predetermined degrees of crystallinity; for an alloy specimen having the chemical composition and an unknown degree of crystallinity, obtaining a curve representing a relationship between volume and temperature thereof; and determining the unknown degree of crystallinity by comparing the curve to the master curve plot.
Abstract:
Disclosed is an injection molding system including a first plunger rod and a second plunger rod configured to move or transport molten material from a melt zone and into a mold. The first and second plunger rods are configured to control and contain the molten material therebetween while moving. The second plunger rod can also be positioned relative to the mold to apply pressure on one side of the mold as the first plunger rod pushes molten material into the mold on an opposite side to force the material into the mold cavity. The second plunger rod can further be used to eject a molded (bulk amorphous) object from the mold. The rods can move in a longitudinal direction (e.g., horizontally) between the melt zone and mold along a longitudinal axis.
Abstract:
A housing (102) or enclosure for an electronic device (100) is formed from a shell and a chassis positioned along an interior of the shell. The shell may be formed from a hard or cosmetic material and the chassis may be formed from a machinable material. The chassis may define one or more machined surfaces that are configured to receive or mount a component (106, 108) of the electronic device.
Abstract:
Techniques or processes for providing markings on products are disclosed. In one embodiment, the products have housings and the markings are to be provided on the housings. For example, a housing for a particular product can include an outer housing surface and the markings can be provided on the outer housing surface so as to be visible from the outside of the housing. The markings are able to be interferometric colors and/or black.
Abstract:
Described herein is a method of producing a feedstock comprising a BMG. A powder is compacted to for the feedstock. The powder has elements of the BMG and the elements in the powder have a same weight percentage as in the BMG. Described herein is a method of producing a feedstock comprising a BMG. A powder is compacted into a sheath to for the feedstock. The powder and the sheath together have elements of the BMG and the elements in the powder have a same weight percentage as in the BMG.
Abstract:
Embodiments relates to a hook side fastener having hooks and a loop side fastener having loops. The hooks and/or loops are made of bulk solidifying amorphous metal alloy. Other embodiments relate to methods of making and using the hook side and loop side fasteners.
Abstract:
Disclosed are systems and methods for mechanically reducing an amount of the skull material in a finished, molded part formed from amorphous alloy using an injection molding system. Skull material of molten amorphous alloy can be captured in a trap before molding such material. A cavity can be provided in the injection molding system to trap the skull material. For example, the cavity can be provided in the mold, the tip of the plunger rod, or in the transfer sleeve. Alternatively, mixing of molten amorphous alloy can be induced so that skull material is reduced before molding. A plunger and/or its tip can be used to induce mixing (e.g., systematic movement of plunger rod, or a shape of its tip). By minimizing the amount of skull material in the finished, molded part, the quality of the part is increased.
Abstract:
An injection molding system and methods for improving performance of the same. The system includes a plunger rod and a melt zone that are provided in-line and on a vertical axis. The plunger rod is moved in a vertical direction through the melt zone to move molten material into a mold. The injection molding system can perform the melting and molding processes under a vacuum. Skull formation in molten material is reduced by providing an RF transparent sleeve in the melt zone and/or a skull trapping portion adjacent an inlet of the mold. It can also be controlled based on the melting unit. Vacuum evacuation can be reduced during part ejection by using a plunger seal, so that evacuation time between cycles is reduced.