Systems and methods for shaping sheet materials that include metallic glass-based materials

    公开(公告)号:US11155907B2

    公开(公告)日:2021-10-26

    申请号:US15856543

    申请日:2017-12-28

    IPC分类号: C22C45/10

    摘要: Systems and methods in accordance with embodiments of the invention advantageously shape sheet materials that include metallic glass-based materials. In one embodiment, a method of shaping a sheet of material including a metallic glass-based material includes: heating a metallic glass-based material within a first region within a sheet of material to a temperature greater than the glass transition temperature of the metallic glass-based material; where the sheet of material has a thickness of between 0.1 mm and 10 mm; where at least some portion of the sheet of material does not include metallic glass-based material that is heated above its respective glass transition temperature when the metallic glass-based material within the first region is heated above its respective glass transition temperature; and deforming the metallic glass-based material within the first region while the temperature of the metallic glass-based material within the first region is greater than its respective glass transition temperature.

    SYSTEMS AND METHODS FOR SHAPING SHEET MATERIALS THAT INCLUDE METALLIC GLASS-BASED MATERIALS

    公开(公告)号:US20180119259A1

    公开(公告)日:2018-05-03

    申请号:US15856543

    申请日:2017-12-28

    IPC分类号: C22C45/10

    CPC分类号: C22C45/10 Y10T428/12479

    摘要: Systems and methods in accordance with embodiments of the invention advantageously shape sheet materials that include metallic glass-based materials. In one embodiment, a method of shaping a sheet of material including a metallic glass-based material includes: heating a metallic glass-based material within a first region within a sheet of material to a temperature greater than the glass transition temperature of the metallic glass-based material; where the sheet of material has a thickness of between 0.1 mm and 10 mm; where at least some portion of the sheet of material does not include metallic glass-based material that is heated above its respective glass transition temperature when the metallic glass-based material within the first region is heated above its respective glass transition temperature; and deforming the metallic glass-based material within the first region while the temperature of the metallic glass-based material within the first region is greater than its respective glass transition temperature.

    Electromagnetic Forming of Metallic Glasses Using a Capacitive Discharge and Magnetic Field
    8.
    发明申请
    Electromagnetic Forming of Metallic Glasses Using a Capacitive Discharge and Magnetic Field 有权
    使用电容放电和磁场的金属玻璃的电磁成形

    公开(公告)号:US20130319062A1

    公开(公告)日:2013-12-05

    申请号:US13960558

    申请日:2013-08-06

    IPC分类号: B21J5/04

    摘要: 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 in combination with an electromagnetic force generated by the interaction of the applied current with a transverse magnetic field. 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 metal and the equilibrium melting point of the alloy in a time scale of several milliseconds or less, at which point the interaction between the electric field and the magnetic field generates a force capable of shaping the heated sample into a high quality amorphous bulk article via any number of techniques including, for example, injection molding, dynamic forging, stamp forging, and blow molding in a time scale of less than one second.

    摘要翻译: 使用快速电容器放电成形(RCDF)工具将金属玻璃均匀地加热,流变软化和热塑性地形成网状的装置和方法与由施加的电流与横向磁场的相互作用产生的电磁力组合 。 RCDF方法利用存储在电容器中的电能的放电,均匀且快速地将金属玻璃合金的样品或电荷加热到非晶态金属的玻璃化转变温度与合金的平衡熔点之间的预定“工艺温度” 在几毫秒或更短的时间尺度内,电场和磁场之间的相互作用产生能够通过任何数量的技术将加热的样品成形为高品质无定形块状物品的力,包括例如注射 成型,动态锻造,冲压锻造和小于1秒的时间尺寸的吹塑。

    Rounded strain wave gear flexspline utilizing bulk metallic glass-based materials and methods of manufacture thereof

    公开(公告)号:US11859705B2

    公开(公告)日:2024-01-02

    申请号:US16802267

    申请日:2020-02-26

    IPC分类号: F16H49/00

    CPC分类号: F16H49/001 F16H2049/003

    摘要: Harmonic drives are used widely in robotics as a method for achieving high gear reductions and for driving force transmissions. The harmonic drive is made a three components: a wave generator, a flexspline, and a circular spline. Embodiments described flexsplines for a metal strain wave gearing. The cup of the flexspline is free from sharp edges and with a rounded bottom with a curvature maximized based on the geometry of the flexspline. Compared to a steel flexspline, implementations of flexsplines will have the same outer diameter, the same number of teeth and profile, the same input shaft/base, the same wall thickness near the teeth, but comprise a rounded bottom where the input shaft/base transitions to the straight wall of the flexspline, providing improved performance of BMG flexsplines by reducing low cycle fatigue failures due to stress concentrations.