| Viscosity Characteristic in Metallic Melts with Medium／Short-Range Order Structures |
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| 作者姓名： | 边秀房 张景祥 贾玉波 孙民华 |
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| 作者单位： | [1]KeyLaboratoryofLiquidStructureandHeredityofMaterials（MinistryofEducation）,ShandongUniversity,Jinan250061 [2]BeijingSynchrotronRadiationLaboratory,InstituteofHighEnergyPhysics,ChineseAcademyofSciences,POBox918,Beijing100039 |
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| 摘 要： | Viscosities and liquid structure of alloys Cu75Al25, Cu87Sn13 and Al-12.5%Si and pure metals Cu and Sn are investigated by using torsional oscillation viscometry and high temperature x-ray diffractometry. The viscosities of pure metals and eutectic alloy melts along with the short-range order structure are found to follow the Arrhenius law in a wide range of temperature above the liquidus. The breakpoints in Arrhenius plots emerge when the structures of alloy melts are transformed from the medium-range order structure to the short-range order structure. It has been found that the change of the viscosity of the metallic alloys is a characteristic of microstructure transformation in the related melts.
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| 关 键 词： | 粘性特征 金属熔化 扭转振荡 X-射线衍射测量 铜合金 排列结构 |
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