Revisiting Al-Ni-Zr bulk metallic glasses using the 'cluster-resonance' model

• 来源期刊: 科学通报(英文版)
• 学科: 工学
• 年，卷（期）: 2011,（36）
• 页码范围: 3902-3907
• 页数: 6页
• 分类号: TG139.8
• 语种: 中文

摘要

Six series of alloys,namely,Ni3Zr6Alx,Ni3Zr7Alx,Ni4Zr9Alx,Ni3Zr8Alx,Ni3Zr9Alx and Ni3Zr10Alx (x=1,1.5,2,3) were designed in this work and the bulk metallic glass (BMG) formation of these compositions was investigated by copper mold suction casting. A centimeter-scale BMG sample was obtained for the Ni4Zr9Al2 (Al13.3Ni26.7Zr60 in atomic percent) composition. The thermal glass parameters for this BMG were determined to be ΔTx = 68 K,Trg = 0.579,and γm = 0.689. Using the 'cluster-resonance' model for glass formation an optimal BMG composition was determined using the cluster formula [Ni3Zr9](Al2Ni1).