公开(公告)号：US20130319062A1

公开(公告)日：2013-12-05

申请号：US13960558

申请日：2013-08-06

申请人： California Institute of Technology

发明人： William L. Johnson ,  George Kaltenboeck ,  Marios D. Demetriou ,  Scott N. Roberts ,  Konrad Samwer

IPC分类号： B21J5/04

CPC分类号： B21J5/04 ,  B21D26/14 ,  B23K35/3033 ,  C21D1/04 ,  C21D10/00 ,  C21D2201/03 ,  C22C1/002 ,  C22C45/00 ,  C22F3/02

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。