Mg-(6～8)Al-1Zn-0.7Si-0.25Mn镁合金的DSC分析  

DSC Analysis of Mg-(6～8)A1-1Zn-0.7Si-0.25Mn Magnesium Alloy

作　　者：杨明波[1] 潘复生[2] 白亮[2] 唐丽文[1] 

机构地区：[1]重庆工学院,重庆400050 [2]重庆大学,重庆400030

出　　处：《铸造技术》2007年第8期1046-1048,共3页Foundry Technology

基　　金：重庆市科技攻关项目(编号:CSTC-2004AA4003)

摘　　要：采用DSC差热分析方法,研究了Sb和RE复合添加以及Al含量变化对Mg-(6～8)A1-1Zn-0.7Si-0.25Mn合金DSC曲线的影响。结果表明:同时添加0.4%Sb和0.25%RE,Mg-6A1-1Zn-0.7Si-0.25Mn合金的凝固峰值温度、凝固开始温度和凝固结束温度下降,凝固温度范围扩大,而对于添加了0.4%Sb和0.25%RE的Mg-(6～8)A1-1Zn-0.7Si-0.25Mn合金,随Al含量增加,合金的凝固开始温度和凝固结束温度下降,凝固温度范围扩大,但凝固峰值温度变化不大。The effects of compound additions of Sb and RE and various AI contents on the DSC curves of Mg-（6～8）Al-1Zn-0.7Si-0.25Mn magnesium alloys were investigated by Differential Scanning Calorimeter（DSC）, and the results show that the initial freezing temperature and the finial freezing temperature of the experimental alloy decrease with the 0.4wt% Sb and 0.25wt% RE addition, and the range of solidification temperature increases. In addition, with increasing the AI content, the initial freezing temperature and ending temperature of the Mg-（6～8）Al-1Zn-0.7Si-0.25Mn magnesium alloys containing 0.4 % Sb and 0.25% RE, decreases, the range of solidification temperature increases, but the solidification peak-value temperature does not change obviously.

关 键 词：Mg-Al-Si基合金 DSC曲线 凝固温度 

分 类 号：TG136.1[一般工业技术—材料科学与工程]