발간논문

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Vol.44, No.5, 295 ~ 301, 2006
Title
Strategy for Alloy Design of Bulk Amorphous Alloy with a Simultaneous Improvement of Glass Forming Ability and Plasticity
이석우 Seok Woo Lee , 이상철 Sang Chul Lee , 이재철 Jae Chul Lee , 김유찬 Yu Chan Kim , E. Fleury
Abstract
A new Cu-Zr-Al-Be monolithic bulk amorphous alloy was developed utilizing minimal use of toxic and expensive Be. The developed alloy not only exhibits high plasticity (~7%) but also possesses a large glass forming ability (GFA) (Φ12 mm). The possible mechanisms underlying the enhancement of the glass forming ability and the plasticity exhibited by this alloy are discussed based on the dimensionless parameter γ and the structural changes. In addition, alloy design strategy for a simultaneous improvement of GFA and plasticity are proposed from the perspective of atomic packing state.
Key Words
Bulk amorphous alloy, Glass forming ability, Plasticity
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