韩小伟,张瑞英,李艳辉,王鹏

• 1:内蒙古工业大学材料科学与工程学院
• 2:内蒙古轻合金重点实验室

摘要(Abstract)：

以TiO2粉、C粉、Al粉和La2O3粉为原料,利用放热弥散法原位合成稀土La2O3含量分别为0,0.1%,0.2%,0.3%(质量分数)的Al-TiO2-C晶粒细化剂,并使用这4种细化剂分别对工业纯铝进行细化试验。采用XRD、SEM及能谱分析等方法研究了La2O3含量对Al-TiO2-C细化剂显微组织的影响。结果表明:La2O3含量为0.2%时,Al-TiO2-C晶粒细化剂组织中Al3Ti呈块状分布,彼此间断开且颗粒分布相对均匀。此时对工业纯铝的细化效果相对较好。适量的Al20Ti2La对提高Al-TiO2-C细化剂细化性能起到重要作用。

关键词(KeyWords)： 放热弥散法;Al-TiO2-C;晶粒细化

Abstract:

Keywords:

基金项目(Foundation): 内蒙古自然科学基金(2013MS0804);; 内蒙古高等学校科学研究基金(NJZZ14056)

作者(Author): 韩小伟,张瑞英,李艳辉,王鹏

DOI: 10.13289/j.issn.1009-6264.2015.08.006

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