王武孝,亢春生,范志康,董志乔

• 1:西安理工大学材料科学与工程学院

摘要(Abstract)：

采用无压浸渗技术制备Al2O3f/Mg-9Al复合材料,利用金相显微镜、扫描电子显微镜、X射线衍射仪、布氏硬度计,研究了稀土Nd及热处理对复合材料组织和性能的影响。结果表明:在复合材料中添加稀土Nd元素变质处理后,基体合金的显微组织得到明显的细化,同时Mg2Si相的形成和生长得到抑制;热处理后,组织中的灰色Mg2Si相明显增加,呈现均匀分布,-βMg17Al12相在晶界上弥散分布;稀土Nd和热处理对复合材料硬度的提高都有促进作用,添加稀土Nd后复合材料的硬度从133HB增加到150HB,固溶和时效热处理后,复合材料的硬度分别达到232HB、262HB。

关键词(KeyWords)： 镁基复合材料;Nd;热处理;硬度

Abstract:

Keywords:

基金项目(Foundation): 中国博士后基金(20060391005);; 陕西省教育厅科学研究项目(08JK369)

作者(Author): 王武孝,亢春生,范志康,董志乔

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