TY - JOUR
T1 - Influence of spark plasma sintering parameters on the mechanical properties of Cu50Zr45Al5 bulk metallic glass obtained using metallic glass powder
AU - Cardinal, S.
AU - Pelletier, J. M.
AU - Qiao, J. C.
AU - Bonnefont, G.
AU - Xie, G.
N1 - Funding Information:
This work was partially supported by the National Natural Science Foundation of China (No. 51401192 ), the Fundamental Research Funds for the Central Universities (No. 3102015ZY027 and 3102015BJ(II)JGZ019 ), the Aeronautical Science Foundation of China ( 2015ZF53072 ), the Natural Science Foundation of Shaanxi Province (No. 2016JM5009 ). The authors would also thank C. Menet and F. Delmas for experimental assistance.
Publisher Copyright:
© 2016
PY - 2016/11/20
Y1 - 2016/11/20
N2 - 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 30 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 1600 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 3 mm. However an increase in applied pressure (from 90 MPa to 1 GPa) induces a significant improvement in bonding between powder particles.
AB - 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 30 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 1600 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 3 mm. However an increase in applied pressure (from 90 MPa to 1 GPa) induces a significant improvement in bonding between powder particles.
KW - Bulk metallic glass
KW - Mechanical properties
KW - Microstructure
KW - Powder densification
KW - Spark plasma sintering
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U2 - 10.1016/j.msea.2016.09.032
DO - 10.1016/j.msea.2016.09.032
M3 - Article
AN - SCOPUS:84987962187
VL - 677
SP - 116
EP - 124
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
ER -