艾桃桃,费岩晗,冯小明,余宁,于琦,李文虎,袁新强

• 1:陕西理工大学材料科学与工程学院

摘要(Abstract)：

采用放电等离子技术(SPS),利用Ti-Al-Ti_3AlC_2体系的原位反应制备Ti_2AlC/TiAl基复合材料。借助XRD、SEM和OM分析其组成及显微结构。结果表明,1100℃烧结后,Ti_3AlC_2全部转化为Ti_2AlC。产物由TiAl、Ti3Al和Ti_2AlC相组成。Ti_2AlC呈颗粒状分布于基体晶界处,部分钉扎于晶内。当Ti_3AlC_2掺杂量为10%时,综合力学性能最佳,维氏硬度、断裂韧性和抗弯强度分别达到了4.9 GPa、7.41 MPa·m1/2和699.9 MPa,较TiAl合金有较大提升。

关键词(KeyWords)： TiAl基复合材料;Ti_2AlC;原位反应;放电等离子技术(SPS);力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年科学基金(51201094);; 陕西省青年科技新星科技计划(2014KJXX-75);; 陕西省自然科学基础研究计划重点项目(2016JZ016);; 陕西省教育厅自然科学重点科学研究计划(16JS018);陕西省教育厅专项(15JK1157)

作者(Author): 艾桃桃,费岩晗,冯小明,余宁,于琦,李文虎,袁新强

DOI: 10.13289/j.issn.1009-6264.2016.08.004

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