王国路,陈刚,赵玉涛,吴志锋

• 1:江苏大学材料科学与工程学院

摘要(Abstract)：

采用K2TiF6和KBF4混合盐原位反应法制备TiB2/7055复合材料,研究了稀土对复合材料铸态组织和力学性能的影响。结果表明:添加0.3%稀土可以显著细化复合材料的铸态组织,晶粒尺寸从200μm减小到40μm左右。同时,TiB2颗粒得到细化,其平均尺寸约为100 nm;TiB2颗粒在基体上的分布也更加均匀。经过480℃固溶60 min、120℃时效24 h后复合材料抗拉强度达到690 MPa,伸长率达到5.5%。

关键词(KeyWords)： TiB2/7055基复合材料;稀土;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(50971066);; 江苏省高校科技成果产业化推进项目(JH09-37);; 江苏省高校自然科学研究重大项目(10KJA430008)

作者(Author): 王国路,陈刚,赵玉涛,吴志锋

DOI: 10.13289/j.issn.1009-6264.2011.07.004

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