Molecular dynamics simulation of amorphous segregation in Ag-Rh alloys
来源期刊：Rare Metals2003年第3期
论文作者：ZHANG Jingxiang and BIAN XiufangKey Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan , China
文章页码：164 - 168
摘 要：<正> Molecular dynamics simulation was carried out to investigate the liquid and amorphous microstructures of binary Agx-Rh（100-x） （x = 25, 50, 75 in atom fraction） alloys. Segregation feature of homogeneous interatomic binding of Ag-Rh liquid was found and probed, which can be retained into amorphous solids upon rapid cooling. Homogeneous binding may occur when the difference in the elemental atomic sizes is less than 10%. The icosahedra in liquid before the formation of amorphous state exist in a stable state and the network formed by 1551-clusters in molten alloys would inhibit the crystallization and diffusion of atoms. A higher degree of 1551-clusters will be favorable to form metallic glasses.
ZHANG Jingxiang and BIAN XiufangKey Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061, China
摘 要：<正> Molecular dynamics simulation was carried out to investigate the liquid and amorphous microstructures of binary Agx-Rh（100-x） （x = 25, 50, 75 in atom fraction） alloys. Segregation feature of homogeneous interatomic binding of Ag-Rh liquid was found and probed, which can be retained into amorphous solids upon rapid cooling. Homogeneous binding may occur when the difference in the elemental atomic sizes is less than 10%. The icosahedra in liquid before the formation of amorphous state exist in a stable state and the network formed by 1551-clusters in molten alloys would inhibit the crystallization and diffusion of atoms. A higher degree of 1551-clusters will be favorable to form metallic glasses.
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