Enhancement of plasticity in Ni-based injection cast bulk metallic glasses (BMGs) and metallic glass matrix composites (MGMCs) has been investigated. The injection-cast Ni59Zr16Ti13Si 3Sn2Nb7 BMG showed a significantly improved plastic region to failure of 6.5%, as compared to that of the injection-cast Ni59Zr20Ti16Si2Sn3 BMG of 2%. The Ni59Zr20Ti16Si2Sn 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 40vol.%, while monolithic warm-extruded Ni 59Zr20Ti16Si2Sn3 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.
Bibliographical noteFunding Information:
The work performed at the Center for Non-Crystalline Materials, Yonsei University was supported by the Creative Research Initiatives of the Korean Ministry of Science and the work performed at Ames Laboratory was supported by USDOE, Office of Basic Energy Sciences, Division of Materials Science under contract no. W-7405-ENG-82.
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry