李俊杰,何维均,田宇禾,胥政,袁飞,蒋斌

• 1:重庆大学材料科学与工程学院

摘要(Abstract)：

钛合金和硬质合金在扩散复合过程中由于易产生脆硬化合物、热膨胀系数差异诱导高热应力等，导致界面结合性能较差。为了改善TA15/硬质合金复合材料界面结合性能，研究了中间层、复合温度以及硬质合金中Co含量对复合材料界面结构和剪切强度的影响。通过扫描电镜(SEM)、能谱仪(EDS)和X射线衍射(XRD)等表征方法对复合材料界面附近的元素扩散、界面化合物的类型等进行分析。通过压缩剪切实验对TA15/硬质合金复合材料的界面剪切强度进行测试。结果表明：加入中间层材料(Ti、Fe)可以在一定程度上增加界面附近元素扩散，还能够通过自身的塑性变形来释放复合界面的热应力，从而提升界面的结合性能。复合温度会影响界面附近的元素扩散速率和复合界面的组织结构，从而影响复合材料界面结合性能。

关键词(KeyWords)： TA15/硬质合金复合材料;中间层材料;界面结构;结合性能

Abstract:

Keywords:

基金项目(Foundation): 国防科工局基础科研项目(JCKY2021110B050)

作者(Author): 李俊杰,何维均,田宇禾,胥政,袁飞,蒋斌

DOI: 10.13289/j.issn.1009-6264.2024-0275

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