Fe-Based Nano-Structured Powder Reinforced Zr-Based Bulk Metallic Glass Composites by Powder Consolidation

Title
Fe-Based Nano-Structured Powder Reinforced Zr-Based Bulk Metallic Glass Composites by Powder Consolidation
Authors
조승목한준현이진규김유찬
Keywords
metallic glass; nano-structure powder; powder metallurgy; spark plasma sintering; mechanical properties; thermal analysis
Issue Date
2009-10
Publisher
한국재료학회지; Korean Journal of Materials Research
Citation
VOL 19, NO 9, 504-509
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.
URI
http://pubs.kist.re.kr/handle/201004/36358
ISSN
1225-0562
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KIST Publication > Article
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