Application of spinodal decomposition to produce metallic glass matrix composite with simultaneous improvement of strength and plasticity
- Application of spinodal decomposition to produce metallic glass matrix composite with simultaneous improvement of strength and plasticity
- 김민욱; 안재평; 석현광; 에릭플러리; 장혜정; 김도향; 차필령; 김유찬
- cu-based alloy; bulk metallic glass; spinodal decomposition; plasticity; strength
- Issue Date
- Metals and Materials International
- VOL 15, NO 2, 193-196
- An original two-step procedure, based on the miscibility gap between two elements, produced an in-situ bulk
metallic glass matrix composite. The Zr-Ta binary alloy, which exhibits a large immiscible region in solid state,
formed a two-phase mixture of Zr- and Ta-rich solid solution by phase separation. When the Zr-Ta binary alloy
was remelted with Cu, Zr, and Ti, the Ta-rich solid solution, which has a high melting temperature, did not
melt, while the remaining melt containing Zr-rich solid solution mixed with the other elements and solidified
into an amorphous phase at lower temperatures. The improvement of strength in the composite indicates that
the interfaces between the Ta-rich particles and the BMG matrix formed by phase separation are strong enough
to hold a high interfacial cohesion strength.
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