Abstract
Enhancement of plasticity in Ni-based injection cast bulk metallic glasses (BMGs) and metallic glass matrix composites (MGMCs) has been investigated. The injection-cast Ni 59Zr 16Ti 13Si 3Sn 2Nb 7 BMG showed a significantly improved plastic region to failure of 6.5%, as compared to that of the injection-cast Ni 59Zr 20Ti 16Si 2Sn 3 BMG of 2%. The Ni 59Zr 20Ti 16Si 2Sn 3 MGMC containing brass-fibers shows macroscopic plasticity after yielding, and the level of plastic strain increased to around 2% with increasing brass content up to 40 vol.%, while monolithic warm-extruded Ni 59Zr 20Ti 16Si 2Sn 3 BMG show no plastic deformation region. Present study shows that the plasticity of BMG can be improved by selecting proper BMG alloy composition or by introducing ductile reinforcing phase in the BMG matrix.
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