Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5456658 | Materials Science and Engineering: A | 2016 | 29 Pages |
Abstract
Gas atomized Cu50Zr45Al5 amorphous powder was densified by spark plasma sintering, in order to obtain bulk metallic glasses with larger size than that obtained by the conventional casting strategy. The influence of different parameters was investigated: sintering temperature, isothermal holding time as well as size of the specimens. After optimization of the processing parameters, dense and amorphous specimens were elaborated with a diameter up to 30Â mm. Thermal stability and mechanical properties of consolidated samples are similar to those of Cu50Zr45 Al5 cast alloy. A hardness of 535 HV and a compressive strength of 1600Â MPa have been obtained. Fractographic investigation indicated an intergranular rupture mode which leads to lower toughness compared to as the cast material, but for these samples the size is limited to 3Â mm. However an increase in applied pressure (from 90Â MPa to 1Â GPa) induces a significant improvement in bonding between powder particles.
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
S. Cardinal, J.M. Pelletier, J.C. Qiao, G. Bonnefont, G. Xie,