徐思民,阴艳丽,邝海,何文,赵海博

• 1:南昌航空大学材料科学与工程学院
• 2:南昌工学院信息与人工智能学院
• 3:江西科技师范大学江西省光电子与通信重点实验室

摘要(Abstract)：

采用真空电弧熔炼方法制备了AlCrCuFeNb_xNiTi高熵合金，并研究了铸态合金的组织、摩擦磨损性能和高温氧化性能。结果表明：Nb元素的添加促进了Laves相的形成，使AlCrCuFeNiTi合金的相结构由L2_1相、BCC相和FCC相转变为AlCrCuFeNb_(0.5)NiTi合金的L2_1相、Laves相和FCC相。Nb元素的添加会降低AlCrCuFeNiTi合金的耐磨性能，磨损速率从AlCrCuFeNiTi合金的1.572×10~(-5) mm~3/(N·m)提高到AlCrCuFeNb_(0.5)NiTi合金的4.483×10~(-5) mm~3/(N·m),合金的室温磨损机制均为粘着磨损。合金的氧化动力学遵循抛物线速率定律，Nb元素对AlCrCuFeNb_xNiTi合金高温氧化性能的影响随着温度的改变而改变，800和900℃时能提高其高温氧化性能，但1000℃时Laves相的内氧化现象严重导致其高温氧化性能恶化。

关键词(KeyWords)： AlCrCuFeNiTi高熵合金;Nb元素;显微组织;摩擦磨损;高温氧化

Abstract:

Keywords:

基金项目(Foundation): 江西省自然科学基金面上项目(20202BAB204013);; 南昌航空大学研究生创新专项资金项目(YC2022-001)

作者(Author): 徐思民,阴艳丽,邝海,何文,赵海博

DOI: 10.13289/j.issn.1009-6264.2023-0536

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