Methods for shaping high aspect ratio articles from metallic glass alloys using rapid capacitive discharge and metallic glass feedstock for use in such methods

a technology of metallic glass alloys and feedstocks, which is applied in the field of methods and metallic glass alloy feedstocks, can solve the problems of releasing energy and corresponding sharp rise in temperatur
US20150197837A9Active Publication Date: 2015-07-16APPLE INC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
APPLE INC
Publication Date
2015-07-16

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Abstract

The disclosure is directed to a method of forming high-aspect-ratio metallic glass articles that are substantially free of defects and cosmetic flaws by means of rapid capacitive discharge forming. Metallic glass alloys that are stable against crystallization for at least 100 ms at temperatures where the viscosity is in the range of 100 to 104 Pa-s are considered as suitable for forming such high-aspect-ratio articles.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present application claims the benefit of U.S. Provisional Patent Application No. 61 / 793,904, entitled “Methods for Shaping High Aspect Ratio Articles from Metallic Glass Alloys Using Rapid Capacitive Discharge and Metallic Glass Feedstock for Use in Such Methods”, filed on Mar. 15, 2013, which is incorporated herein by reference in its entirety.FIELD

[0002] The present disclosure is directed to methods and metallic glass alloy feedstock that are capable of being shaped into high aspect ratio articles using rapid capacitive discharge forming.BACKGROUND

[0003] U.S. Patent Publication No. 20090236017 is directed to a method of rapidly heating and shaping a metallic glass using a rapid discharge of electrical current. A quantum of electrical energy is discharged with near uniformity through a metallic glass feedstock having a substantially uniform cross-section. The sample is rapidly heated substantially uniformly to a processing temperature...

Claims

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