High aspect ratio parts of bulk metallic glass and methods of manufacturing thereof

摘要

Bulk metallic articles having a high-aspect ratio that are formed of bulk metallic glass, that are net-shaped and that are produced under process conditions that maximize the quality and integrity of the parts as well as the life of the mold tool, thus minimizing production costs, and manufacturing methods for producing such articles are provided.

主权项

1. A method of manufacturing an amorphous metal article comprising:
providing a blank from a bulk metallic glass; heating the blank from the glass state to a processing temperature above the crystallization temperature, Tx, but below the melting temperature, Tm, of the bulk metallic glass, wherein the bulk metallic glass is heated substantially uniformly throughout the blank at a heating rate of at least 100° C./s to a the processing temperature wherein the viscosity of the bulk metallic glass is between 1and 105 Pa-s; applying a shaping pressure to the blank in a shaping tool to form an amorphous metallic article having a high aspect ratio of at least 100and dimensions in all axes of at least 0.5 mm; and quenching the article at a cooling rate sufficient to ensure that the article retains an amorphous phase.