费岩晗,艾桃桃,袁新强,冯小明

• 1:陕西理工大学材料科学与工程学院

摘要(Abstract)：

以TC4钛合金箔(Ti-6Al-4V)作为强韧层,TiC-Ti-Al混合粉末作为复合层,采用放电等离子烧结技术(SPS)制备TC4/Ti_(n+1)AlC_n-TiAl叠层结构复合材料(n=1或2)。研究了TC4/TiAl基叠层复合材料组成、结构和力学性能。结果表明:叠层之间结合良好,随着强韧层数量和Ti_(n+1)AlC_n含量的增加,界面层厚度减小,裂纹在扩展过程中Y型分叉角增大,应力集中因子减小,材料的力学性能显著提升。当强韧层数为9层时,材料的抗弯强度和断裂韧性在Arrester受力方向上达到最大值,分别为(1419.28±70.96)MPa和(62.17±3.11)MPa·m~(1/2)。

关键词(KeyWords)： TC4钛合金;TiAl基复合材料;叠层结构;Ti2AlC;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金面上项目(51671116);; 陕西省自然科学基金重点项目(2016JZ016);; 陕西省教育厅重点实验室项目(16JS018);; 陕西省青年科技新星科技计划项目(2014KJXX-75);; 陕西理工大学科研计划项目(SLGQD16-04)

作者(Author): 费岩晗,艾桃桃,袁新强,冯小明

DOI: 10.13289/j.issn.1009-6264.2017-0352

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