Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Fe-Based Nano-Structured Powder Reinforced Zr-Based Bulk Metallic Glass Composites by Powder Consolidation

  • Cho, Seung-Mok (Division of Materials Science and Engineering, Korea Institute of Science and Technology) ;
  • Han, Jun-Hyun (Division of Materials Science and Engineering, Korea Institute of Science and Technology) ;
  • Lee, Jin-Kyu (Division of Advanced Materials Engineering, Kongju National University) ;
  • Kim, Yu-Chan (Division of Materials Science and Engineering, Korea Institute of Science and Technology)
  • Published : 2009.09.27
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Abstract

The Zr-based bulk metallic glass matrix composites of a mixture of gas-atomized metallic glass powders and Fe-based nanostructured powders were fabricated by spark plasma sintering. The Fe-based nanostructured powders adopted for the enhancement of plasticity were well distributed in the matrix after consolidation, and the matrix remains as a fully amorphous phase. The successful consolidation of metallic glass matrix composite with high density was attributed to viscous flow in the supercooled liquid state during spark plasma sintering. Unlike other amorphous matrix composites, in which improved ductility could be obtained at the expense of their strength, the developed composite exhibited improvement both in strength and ductility. The ductility improvement in the composite was considered to be due to the formation of multiple shear bands under the presence of the Fe-based nanostructured particles.

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References

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