Origin of glass forming ability of Cu-Zr alloys: A link between compositional variation and stability of liquid and glass

被引：9
|
作者：
Ganorkar, Shraddha [1 ]
Lee, Sooheyong [1 ,2 ]
Lee, Yun-Hee [1 ,2 ]
Ishikawa, Takehiko [3 ]
Lee, Geun Woo [1 ,2 ]
机构：
[1] Korea Res Inst Stand & Sci, Div Ind Metrol, Daejeon 305340, South Korea
[2] Univ Sci & Technol, Dept Nano Sci, Daejeon 305340, South Korea
[3] Japan Aerosp Explorat Agcy, Tsukuba Space Ctr, 2-1-1 Sengen, Tsukuba, Ibaraki 3058505, Japan
来源：
PHYSICAL REVIEW MATERIALS | 2018年 / 2卷 / 11期
关键词：
CRYSTAL NUCLEATION; STRUCTURAL MODEL; METALLIC GLASSES; ADDITIONS; DENSITY; BINARY; TI;
D O I：
10.1103/PhysRevMaterials.2.115606
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Here, we provide a link which shows how the compositional change affects the liquid and glass stabilities by measuring temperature-time transformation (TTT) diagram of Cu-Zr alloys, revealing the origin of glass forming ability (GFA) with composition. From the TTT study, we find that the compositional change yields a different origin of GFA for the three best bulk metallic glasses (Cu64Zr36, Cu56Zr44, and Cu50Zr50) due to varying stabilities of liquid and glass, which explains maxima observed in undercoolability, persisting time at nose temperature, and crystal-liquid interfacial free energy.
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页数：6
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