Abrasive waterjet machining of three-dimensional structures from bulk metallic glasses and comparison with other techniques
Abrasive waterjet machining of three-dimensional structures from bulk metallic glasses and comparison with other techniques
复制标题
DOI：
10.1557/jmr.2012.36
复制
发表时间：
2012-04-01
影响因子：
2.7
通讯作者：
Loeffler, Joerg F.
中科院分区：
文献类型：
--
作者：
Wessels, Victor;Grigoryev, Anton;Loeffler, Joerg F.
块体金属玻璃（BMG）是一类很有前途的工程材料，但由于其硬度高和亚稳态结构而难以加工。机械加工引起的结晶可能会产生负面影响，例如降低制造零件的承载能力，因此应该避免。在这里，Zr基BMG加工使用磨料水射流（AWJ），放电，ns脉冲激光雕刻，和传统的干磨技术。对加工材料的表征表明，AWJ保留了非晶相，并提供了快速制造小型三维部件所需的速度和灵活性的组合，而其他技术没有实现这些目标。作为原理证明，使用AWJ从BMG快速加工出类似于骨科植入物的螺钉。
Bulk metallic glasses (BMGs) are a promising class of engineering materials, but they can be difficult to machine due to high hardness and a metastable structure. Crystallization due to machining can have negative effects, such as a decreased load-bearing capacity of fabricated parts, and thus should be avoided. Here, a Zr-based BMG was machined using abrasive waterjet (AWJ), electrical discharge, ns-pulsed laser engraving, and conventional dry-milling techniques. Characterization of the processed material indicated that AWJ preserves the amorphous phase and provides the combination of speed and flexibility required to rapidly fabricate small three-dimensional parts, while the other techniques did not achieve these goals. As proof-of-principle, a screw, similar to an orthopedic implant, was rapidly machined from the BMG using AWJ.