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DONG Shizhi, MENG Xu, MA Zhuang, ZHAO Yuechao. Effects of WC and Al2O3 on the microstructure and erosion wear resistance of FeAlCoCrCuTi0.4 high-entropy alloy coating by argon arc cladding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(7): 127-132. DOI: 10.12073/j.hjxb.2019400194
Citation: DONG Shizhi, MENG Xu, MA Zhuang, ZHAO Yuechao. Effects of WC and Al2O3 on the microstructure and erosion wear resistance of FeAlCoCrCuTi0.4 high-entropy alloy coating by argon arc cladding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(7): 127-132. DOI: 10.12073/j.hjxb.2019400194

Effects of WC and Al2O3 on the microstructure and erosion wear resistance of FeAlCoCrCuTi0.4 high-entropy alloy coating by argon arc cladding

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  • Received Date: June 30, 2018
  • FeAlCoCrCuTi0.4, WC/Al2O3-FeAlCoCrCuTi0.4 high-entropy alloy (HEA) coating had been cladded by means of argon arc cladding. The effects of WC and Al2O3 on microstructure and properties of FeAlCoCrCuTi0.4 high entropy alloy coatings were investigated by means of XRD, SEM, EDS, hardness testing and erosion wear testing. The results show that the alloy coating prepared by argon arc cladding has good formability, no holes, cracks and other defects, and high strength metallurgical bonding with the matrix. The addition of WC and Al2O3 has a significant effect on reducing the dilution rate of the coating. The three kinds of coatings are mainly composed of BCC phase (Fe-Cr solid solution), and the grains exist in the form of cellular dendrites. After adding WC, the grain size is obviously refined, and the hardness of the coating is 685.8 HV under various strengthening effects. The addition of WC and Al2O3 significantly improved the erosion wear resistance of the coating, and the wear resistance could almost reach 2 times of that of FeAlCoCrCuTi0.4 high entropy alloy coating.
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