【摘要】 采用挤压铸造法制取了硼酸铝晶须增强ZL109复合材料。利用高温DSC,XRD和SEM对复合材料界面反应进行了分析。研究表明:9Al2O32B2O3wZL109复合材料界面反应的发生取决于合金元素和复合材料经历的温度。Mg是影响界面反应的一个主要因素,其与硼酸铝晶须相互作用生成界面产物MgAl2O4,Al能够与晶须发生反应,O对界面反应起促进作用,而Cu,Ni则不参与界面反应;制约界面反应的另一主要因素是温度。并得出复合材料中的界面反应进程:温度高于690℃时,Mg和Al均能与硼酸铝晶须发生反应;而当温度降低至449～690℃时,则仅有Mg与晶须进行相互作用。更多还原

【Abstract】 Al 2O 32B 2O 3 whisker reinforced ZL109 alloy were fabricated by squeeze casting technique By means of DSC, XRD and SEM analysis, the reactivity between 9Al 2O 32B 2O 3 whisker and the ZL109Al matrix was studied The results show that the alloying elements and the processing temperature have strongly influence on the occurrence of the interfacial reaction The magnesium is one of main reasons that cause the interfacial reaction, aluminum can react with AlBO w, oxygen promotes the interfacial reaction, and Cu, Ni don′t take part in the interfacial reaction Temperature is another of main reasons that cause the interfacial reaction: if the temperature is higher than 690℃, both Mg and Al react with the 9Al 2O 32B 2O 3 whisker If the temperature ranges from 449℃ to 690℃, only Mg reacts with the whisker更多还原