吴海峰,李建超,张学习,耿林

• 1:航天特种材料及工艺技术研究所
• 2:哈尔滨工业大学材料科学与工程学院

摘要(Abstract)：

采用冷等静压后热挤压变形工艺制备高含量石墨烯增强6061Al复合材料,研究热挤压变形过程中复合材料显微组织的演化特征。结果表明:冷等静压后坯锭的致密度达到92.5%,在挤压温度480℃、挤压比25∶1的条件下,复合材料棒材的致密度达到99.7%。随着塑性变形量的增大,石墨烯团聚体逐渐被打散,并沿挤压方向呈不连续状分布;由于热挤压保温温度远低于热压烧结温度,热挤压态复合材料中石墨烯与铝合金未发生界面反应;冷等静压后进行高温塑性变形可获得高致密度的复合材料,同时避免了石墨烯与铝合金之间生成Al_4C_3的界面反应。

关键词(KeyWords)： 铝基复合材料;石墨烯纳米片;粉末冶金;热挤压;显微组织

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(217YFB0703103)

作者(Author): 吴海峰,李建超,张学习,耿林

DOI: 10.13289/j.issn.1009-6264.2017-0503

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