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Effect of Electron Beam Treatment on the Structure, Properties and Fracture Behavior of High-Entropy Co – Cr – Fe – Mn – Ni Alloy

  • ADDITIVE TECHNOLOGIES, POWDER AND COMPOSITE MATERIALS
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Metal Science and Heat Treatment Aims and scope

A high-entropy Co – Cr – Fe – Mn – Ni alloy with a non-equiatomic composition obtained by the method of wire arc additive manufacturing (WAAM) is studied. The stress-strain curves due to tension of the alloy are analyzed in the initial condition and after electron beam treatment. The strength and ductility parameters, the nano- and microhardness, and the tribological properties are determined as a function of the energy density of the electron beam. Analysis of the fracture surface after the electron beam treatment and of the regions of ductile fracture shows the presence of a region with a banded (lamellar) structure. The scalar dislocation density is shown to vary nonmonotonically and to attain a maximum value of about 5.5 × 1010 cm – 2 at a distance of 25 µm from the irradiated surface. The electron beam treatment lowers the strength and ductility properties of the high-entropy alloy. It is assumed that the defects produced in the surface layer under such a treatment may be responsible for lowering of the strength and ductility of the alloy.

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Authors and Affiliations

  1. Siberian Sate Industrial University, Novokuznetsk, Russia

    Yu. A. Shlyarova, V. E. Gromov & S. V. Konovalov

  2. Institute of High-Current Electronics of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia

    Yu. F. Ivanov

Authors
  1. Yu. A. Shlyarova
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  2. V. E. Gromov
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  3. S. V. Konovalov
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  4. Yu. F. Ivanov
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 54 – 59, November, 2022.

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Shlyarova, Y.A., Gromov, V.E., Konovalov, S.V. et al. Effect of Electron Beam Treatment on the Structure, Properties and Fracture Behavior of High-Entropy Co – Cr – Fe – Mn – Ni Alloy. Met Sci Heat Treat 64, 662–667 (2023). https://doi.org/10.1007/s11041-023-00868-4

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  • DOI: https://doi.org/10.1007/s11041-023-00868-4

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