| 硼对铸态Al0.3CoCrFeNi高熵合金组织及性能的影响 |
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| 引用本文： | 李荣斌,邹传乐,张志玺,张如林,彭望君.硼对铸态Al0.3CoCrFeNi高熵合金组织及性能的影响[J].稀有金属材料与工程,2023,52(2):667-674. |
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| 作者姓名： | 李荣斌 邹传乐 张志玺 张如林 彭望君 |
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| 作者单位： | 上海理工大学 材料与化学学院,上海理工大学 材料与化学学院,上海电机学院,上海电机学院,上海电机学院 |
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| 基金项目： | 上海市地方院校能力建设项目(21010500900)；上海大件热制造工程技术研究中心(18DZ2253400) |
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| 摘 要： | 采用冷坩埚悬浮熔炼法制备了Al0.3CoCrFeNiBx(x=0,0.01,0.05,0.1)系列高熵合金。利用X射线衍射仪、电子背散射衍射分析、扫描电子显微镜及附带的波谱仪分析了B的添加对Al0.3CoCrFeNi合金组织结构的影响,研究了Al0.3CoCrFeNiBx合金的显微硬度、室温摩擦磨损性能及室温压缩性能。结果表明:Al0.3CoCrFeNi合金为fcc结构,随着B含量的增加,fcc相基体中晶界处Cr2B析出相逐渐增多,且Cr2B相由颗粒状分布逐渐转变为连续网状分布,致使合金的硬度、耐磨性和屈服强度均逐渐提高。可见,Cr2B析出相弥散强化作用显著,Al0.3CoCrFeNiB0.1综合性能更佳。
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| 关 键 词： | Al0.3CoCrFeNiBx高熵合金 微量硼 晶粒细化 摩擦磨损 |
| 收稿时间： | 2022/1/20 0:00:00 |
| 修稿时间： | 2022/2/9 0:00:00 |
Effect of Boron addition on microstructure and propertiesof as-cast Al0.3CoCrFeNi high entropy alloy |
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| Li Rongbin,Zou Chuanle,Zhang Zhixi,Zhang Rulin and Peng Wangjun.Effect of Boron addition on microstructure and propertiesof as-cast Al0.3CoCrFeNi high entropy alloy[J].Rare Metal Materials and Engineering,2023,52(2):667-674. |
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| Authors: | Li Rongbin Zou Chuanle Zhang Zhixi Zhang Rulin and Peng Wangjun |
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| Affiliation: | School of Materials and Chemistry,University of Shanghai for Science and Technology,School of Materials and Chemistry,University of Shanghai for Science and Technology,School of Materials engineering,Shanghai Dianji University,School of Materials engineering,Shanghai Dianji University,School of Materials engineering,Shanghai Dianji University |
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| Abstract: | Al0.3CoCrFeNiBx(x= 0,0.01, 0.05, 0.1) high entropy alloys were fabricated by cold crucible levitation melting. The effect of addition of B on the microstructures of Al0.3CoCrFeNiBxalloys were studied using X-ray diffraction, electron backscatter diffraction, scanning electron microscopy with wavelength dispersive X-ray spectroscopy. The microhardness, friction and wear properties and compression properties of Al0.3CoCrFeNiBxalloys at room temperature were analyzed. The results show that Al0.3CoCrFeNi alloy is FCC structure. With increasing B content, the Cr2B precipitated phase increases gradually at the grain boundaries of FCC phase matrix, and the Cr2B phase gradually changes from granular distribution to continuous network distribution, resulting in the alloy microhardness, wear resistance and yield strength are gradually improved. It can be seen that the precipitation of Cr2B has significant dispersion strengthening effect, and the comprehensive performance of Al0.3CoCrFeNiB0.1is better. |
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| Keywords: | Al0 3CoCrFeNiBx high-entropy alloys trace boron grain refinement friction and wear |
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