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Effect of Aluminum Content on the Tribological Properties of AlxCrTiMo Refractory High-Entropy Alloys

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Abstract

Refractory high-entropy alloys are a new type of alloy exhibiting good properties at high temperatures. In this study, AlxCrTiMo refractory high-entropy alloys were prepared by spark plasma sintering, and the mechanical and tribological properties of the alloys were investigated. The three-dimensional morphology and SEM image of the worn surface showed variation of wear marks, wherein the wear rate of the alloy decreased with increasing temperature, and the main wear mechanism changed from abrasive to adhesive wear. The results of Raman and x-ray diffraction spectroscopies of the phase structure of the oxidized glazed layer on the wear marks showed that the oxide layer on the surface of the Al0.25CrTiMo wear mark at 800°C contained oxides of MoO3 and MoO2. It can be concluded from these results that reduction of the aluminum content of the alloy will promote the formation of Cr and Mo oxides, which is important in the development of high-temperature wear resistance of AlxCrTiMo alloys.

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Acknowledgments

This work was supported by the Natural Science Foundation of Gansu Province, China (Grant No. 20JR5RA560) and the Project National United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology, China (Grant No. 201907).

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Authors and Affiliations

  1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China

    Ruiyang Zhang, Aijun Zhang, Junhu Meng & Jiesheng Han

  2. School of Mechanical Engineering, Xinjiang University, Urumqi, 830000, China

    Ruiyang Zhang & Kelimu Tulugan

  3. National United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology, Luoyang, 471023, China

    Jiesheng Han

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  1. Ruiyang Zhang
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  2. Kelimu Tulugan
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Contributions

RZ involved in conceptualization, formal analysis, data curation, investigation, writing—original draft, and writing—review & editing. KT participated in writing—review & editing and formal analysis. AZ involved in funding acquisition, investigation, and methodology. JM participated in formal analysis, methodology, and project administration. J H: participated in software, supervision, and validation.

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Correspondence to Kelimu Tulugan or Jiesheng Han.

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All authors of this manuscript have directly participated in planning, execution, and analysis of this study. The contents of this manuscript have not been copyrighted or published previously. The contents of this manuscript are not now under consideration for publication elsewhere. The contents of this manuscript will not be copyrighted, submitted, or published elsewhere while acceptance by Journal of Materials Science is under consideration. There are no directly related manuscripts or abstracts, published or unpublished, by any authors of this manuscript. We declare that we do not have any commercial or associative interest that represents a conflict of interest in connection with the work submitted.

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Zhang, R., Tulugan, K., Zhang, A. et al. Effect of Aluminum Content on the Tribological Properties of AlxCrTiMo Refractory High-Entropy Alloys. J. of Materi Eng and Perform 31, 984–993 (2022). https://doi.org/10.1007/s11665-021-06243-9

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