|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIII
||Densification of a Cu-Zr-Al Metallic Glass Powder by Spark Plasma Sintering
||Sandrine Cardinal, Jean-Marc Pelletier, Guillaume Bonnefont, Jichao Qiao, Guoqiang Xie
|On-Site Speaker (Planned)
Bulk metallic glasses are usually directly prepared by rapid cooling from the melt into a water-cooled copper mould. Therefore another solution to produce large specimen is to get first amorphous powders and then to densify these powders, for instance by warm extrusion, vacuum hot pressing or more recently by spark plasma sintering (SPS).
The present paper addresses the influence of the processing conditions on the density and mechanical properties of a Cu51.6-Zr43-Al5.4 (at.%) bulk metallic glass obtained by hot pressing or SPS. Influence of experimental parameters has been studied: sintering time and temperature, applied load, size of the sample. The conditions to obtain a dense, amorphous and hard specimen have been determined, both for hot pressing or SPS. After optimization, a fully dense sample with a hardness of HV0.3 = 520 has been obtained using the following conditions: 5 minutes at 420°C with an applied pressure of 90 MPa.
||Planned: A print-only volume