Abstract
In this study, the microstructure, mechanical, and tribological properties of (Ti42V28Zr15Nb15)100-xAlx lightweight refractory high-entropy alloys (LRHEAs) were systematically investigated. The results show that the single BCC solid solution structure of LHEAs is maintained after the addition of Al elements, and no other phases are formed. The addition of Al elements to the alloys can be reduce density, improve properties, and enhance wear resistance. While the hardness of the alloy increased from about ~ 352 HV to ~ 430 HV, the tensile ductility decreased significantly. The main reason for the increase in hardness is the strong bonding between aluminum atoms and other atoms. On the other hand, the severe impairment of the tensile properties may be due to the decrease in GNDs. Although the addition of Al helps to reduce the coefficient of friction, the wear rate of the alloy increases.
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Acknowledgements
This work was supported by the National Key R&D Program of China (2016YFB0300901), National Science Foundation of China (51705539, 52161011), Natural Science Foundation of Guangxi Province (2023GXNSFDA026046), Central Guiling Local Science and Technology Development Fund Projects (ZY23055005), Scientific Research and Technology Development Program of Guilin (20220110-3, 2020010903).
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Chaojie Liang contributed to the conceptualization, methodology, validation, formal analysis, investigation, writing—original draft, and visualization. Yunlai Deng contributed to the conceptualization, investigation, Writing—review and editing, and funding acquisition; Yuankang Xie contributed to the resources and project administration. Chenglei Wang contributed to the methodology, resources, and funding acquisition.
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Liang, C., Deng, Y., Xie, Y. et al. Effect of Al on the microstructure, mechanical properties, and wear resistance of TiVZrNbAlx alloys. J Mater Sci 59, 13218–13233 (2024). https://doi.org/10.1007/s10853-024-09958-x
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DOI: https://doi.org/10.1007/s10853-024-09958-x