祝捷,王培卿,薛彦庆,陈易山,张晗,郝启堂,李新雷

• 1:空军工程大学空管领航学院
• 2:西北工业大学材料学院凝固技术国家重点实验室

摘要(Abstract)：

颗粒增强铝基复合材料的室温韧性和高温强度是制约其应用的主要瓶颈，寻求时效析出相的高温稳定和促进增强颗粒的均匀分布是同步解决该问题的潜在途径之一。采用对掺熔盐反应法原位制备了5 mass%TiB_2/Al-4.5Cu-xSc-yZr复合材料，研究了微量添加Sc、Zr元素对TiB_2/Al-4.5Cu复合材料微观组织和力学性能的影响。结果表明：Sc和Zr元素的联合添加既能促进TiB_2的均匀分布又能明显抑制铸造缺陷，多级热处理工艺进一步促进了θ′-Al_2Cu和Al_3(Sc, Zr)相的稳定析出，所制备的5 mass%TiB_2/Al-4.5Cu-0.2Sc-0.2Zr复合材料的室温抗拉强度达到了385.1 MPa,断裂伸长率为8.6%,300℃下，抗拉强度达到了167.6 MPa,断裂伸长率为9.3%。

关键词(KeyWords)： TiB_2/Al-Cu复合材料;对掺熔盐反应法;微观组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 陕西省重点研发计划(2021ZDLGY14-07);; 咸阳市秦创原科技创新专项(L2022-QCYZX-GY-017)

作者(Author): 祝捷,王培卿,薛彦庆,陈易山,张晗,郝启堂,李新雷

DOI: 10.13289/j.issn.1009-6264.2022-0398

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