Short-Range Order in Liquid Al-Cu-Ni-Ce Alloy
来源期刊：JOURNAL OF RARE EARTHS2002年第6期
论文作者：边秀房 孙民华
Key words：rare earths; amorphous; liquid metals; microstructure;
Abstract: The liquid and amorphous structures of Al85Ni10Ce5 and Al85Cu5Ni5Ce5 alloy were studied by X-ray diffraction. The position of the first peak shifts to bigger Q-values as the concentration of Cu increases. Gaussian decomposition of first peak in radical distribution function (RDF) was applied to Al-Ni(Cu)-Ce system. The bond lengths of Al-Al, Al-TM(Transition metal) and TM-TM increase with the substitution of Ni by Cu. Viscosity measurement shows that viscosity of Al-Ni-Ce alloy increases faster than that of Al-Ni-Cu-Ce alloy. The addition of Cu can decrease the interaction between atoms, so it is unfavorable to Al-based glass formability.
边秀房1，孙民华1
(1.Key Laboratory for Liquid Structure and Heredity of Materials, Ministry of Education Department of Materials Sciences and Engineering, Shandong University, Jinan 250061, China)
Abstract:The liquid and amorphous structures of Al85Ni10Ce5 and Al85Cu5Ni5Ce5 alloy were studied by X-ray diffraction. The position of the first peak shifts to bigger Q-values as the concentration of Cu increases. Gaussian decomposition of first peak in radical distribution function (RDF) was applied to Al-Ni(Cu)-Ce system. The bond lengths of Al-Al, Al-TM(Transition metal) and TM-TM increase with the substitution of Ni by Cu. Viscosity measurement shows that viscosity of Al-Ni-Ce alloy increases faster than that of Al-Ni-Cu-Ce alloy. The addition of Cu can decrease the interaction between atoms, so it is unfavorable to Al-based glass formability.
Key words:rare earths; amorphous; liquid metals; microstructure;
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