Fe-Based Nano-Structured Powder Reinforced Zr-Based Bulk Metallic Glass Composites by Powder Consolidation
- Fe-Based Nano-Structured Powder Reinforced Zr-Based Bulk Metallic Glass Composites by Powder Consolidation
- 조승목; 한준현; 이진규; 김유찬
- metallic glass; nano-structure powder; powder metallurgy; spark plasma sintering; mechanical properties; thermal analysis
- Issue Date
- 한국재료학회지; Korean Journal of Materials Research
- VOL 19, NO 9, 504-509
- 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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