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论文类型：期刊论文

发表时间：2011-12-01

发表刊物：CHINESE SCIENCE BULLETIN

收录刊物：Scopus、SCIE

卷号：56

期号：36

页面范围：3902-3907

ISSN号：1001-6538

关键字：bulk metallic glass; glass-forming ability; Al-Ni-Zr; cluster formula

摘要：Six series of alloys, namely, Ni(3)Zr(6)Al (x) , Ni(3)Zr(7)Al (x) , Ni(4)Zr(9)Al (x) , Ni(3)Zr(8)Al (x) , Ni(3)Zr(9)Al (x) and Ni(3)Zr(10)Al (x) (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 Ni(4)Zr(9)Al(2) (Al(13.3)Ni(26.7)Zr(60) in atomic percent) composition. The thermal glass parameters for this BMG were determined to be Delta T (x) = 68 K, T (rg) = 0.579, and gamma (m) = 0.689. Using the 'cluster-resonance' model for glass formation an optimal BMG composition was determined using the cluster formula [Ni(3)Zr(9)](Al(2)Ni(1)).