旋转柱体法测定Zr50Cu50合金熔体粘滞特性的实验研究.pdfVIP

第4卷 第11期 802 中国科技论文在线 Sciencepaper Online 2009 年 11 月 旋转柱体法测定 Zr50Cu50 合金熔体 粘滞特性的实验研究 曹立军，王静松，黄书友，王精华，薛庆国 （北京科技大学冶金与生态工程学院，北京 100083 ） 摘 要：应用旋转柱体法测量了Zr50Cu50 合金熔体粘度，考察了其熔体粘度随温度变化的关系。粘度-温度曲线 表明，随着温度的下降，Zr50Cu50 合金熔体粘度呈指数增加，基本符合阿雷尼乌斯公式。在 1 208~1 373 K温度 范围内，根据粘度的变化情况可以将熔体状态划分为高温区、中温区和低温区。各温区间存在着不规则的突变 点，根据讨论激活能Ev值的变化可知，在突变温度点处，合金熔体可能发生了微观结构的变化。 关键词：Zr50Cu50 ；熔体；粘度；旋转柱体法 中图分类号：TG146.1 文献标识码：A 文章编号：1673－7180(2009)11 －0802 －4 Experimental study on viscosity properties of molten Zr50Cu50 alloy by rotating cylinder method Cao Lijun ，Wang Jingsong ，Huang Shuyou ，Wang Jinghua ，Xue Qingguo (School of Metallurgical and Ecological Engineering, University of Sciences and Technology Beijing, Beijing 100083, China) Abstract: The dynamic viscosity of molten Zr50Cu50 alloy was measured by using rotating cylinder method and its variation with temperature was explored. The experimental results showed that viscosity of the molten alloy increases with decreasing temperature and fits with Arrhenius formula. Between the temperature range from 1 208 K to 1 373 K, according to the change of viscosity, the molten alloy state can be divided into high-temperature region, mid-temperature region and low-temperature region. The two anomalous transition points were observed between the different temperature region in the viscosity and temperature graph. According to the changes of activation energy values, the microstructure of molten alloy could be changed. Key words: Zr50Cu50 ；molten alloy ；viscosity ；rotating cylinder method