| Title |
Plasticity Enhancement of an Amorphous Alloy Driven by Atomistic-scale Phase Separation |
| Authors |
이재철(Jae Chul Lee); 이상철(Sang Chul Lee); 김휘준(Hwi Jun Kim); 김규현(Kyou Hyun Kim) |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
bulk amorphous alloy; plasticity; phase separation |
| Abstract |
A bulk amorphous alloy, Zr54Cu36Al4Be6, was synthesized. This alloy shows a yield strength of ~1.8 GPa and a large plastic strain of ~20.5%, which have hardly been observed in monolithic bulk amorphous alloys. Microstructures of this alloy were observed to investigate the origin of the extraordinary plasticity of the alloy. The alloy exhibited a unique microstructure characterized by atomistic-scale phase separation, which probably stems from the large difference in mixing enthalpy between the binary pairs of Zr-Be and Cu-Be. This paper discusses the effect of atomistic-scale phase separation on the enhanced plasticity of amorphous alloys. |