半固态铝合金中固相分数差热扫描法的研究  

Study of Solid Content in Aluminum Alloys Reheated to Semisolid State by DSC

作　　者：余忠土[1] 张恒华[1] 邵光杰[1] 许珞萍[1] 徐霖[1] 

机构地区：[1]上海大学材料学院,上海200072

出　　处：《物理测试》2002年第1期22-25,44,共5页Physics Examination and Testing

摘　　要：利用差热扫描分析法(Differential Scanning Calorimeter)研究半固态铝合金ZL101在二次重熔过程中固相分数随温度变化的规律。通过与相图计算法及金相法的测量结果比较,得出:采用DSC研究半固态铝合金在二次重熔过程中的固相分数是切实可行的,并且该方法具有操作简单、结果准确的优点。The method of DSC( Differential Scanning Calorimeter) is used to study the relation of the fraction of solid as a function of temperature in aluminum alloys in the semisolid state during reheating. By comparing the results of DSC with those of quantitative metallography and computation,it is shown that the DSC can be used to analysis the fraction of solid in the reheating of aluminum billets and possesses a simpler operation and higher accuracy.

关 键 词：差热扫描分析法 铝合金 固相分数 二次重熔 半固态加工 

分 类 号：TG249[金属学及工艺—铸造]