(Cu43Zr48Al9)98Y2-based bulk metallic glass composites (BMGCs) with dispersed Ta particles (3vol.％, 6vol.％, 9vol.％) were successfully fabricated through suction casting. The thermal properties, microstructure, and mechanical properties of the BMGCs were systematically investigated. Ta particles are homogeneously dispersed in the amorphous matrix. Ta particle reinforced BMGCs exhibit similar thermal properties and glass-forming ability with the (Cu43Zr48Al9)98Y2 base BMG. Compression test results show that the BMGC with 9vol.％ Ta particles has superior mechanical performance with up to 15.7％ compressive plastic strain, 2,216 MPa yield strength, and 2,260 MPa fracture strength at room temperature. These homogeneously distributed Ta particles act as discrete obstacles in the amorphous matrix, restricting the highly localized shear band. This results in the formation of multiple shear bands around the Ta-rich particles, which lowers the stress concentration, allowing the shear band to propagate further and improve plasticity.

Ke Yang;Bing Li;Xin Wang;Xin-hui Fan

School of Materials Science and Chemical Engineering,Xi'an Technological University,Xi'an 710021,China

中国铸造

[1]Ke Yang;Bing Li;Xin Wang;Xin-hui Fan-.Plasticity improvement of (Cu43Zr48Al9)98Y2 bulk metallic glass composites by dispersed Ta particles)[J].中国铸造,2022(03):275-280

Cu43Zr48Al9,98Y2,BMGCs,3vol,6vol,9vol,BMGC

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