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Electrically Assisted Solid-State Joining of CrMnFeCoNi High-Entropy Alloy

Abstract

Equiatomic CrMnFeCoNi high-entropy alloy was joined in solid-state by electrically assisted pressure joining (EAPJ). Cracks and compositional segregation were not found in joining zones (JZ). As the applied electric current increased, the microstructure of JZ changed from a deformed and partially recrystallized microstructure to a fully recrystallized one with grain growth. JZ showed sound mechanical properties through the Vickers hardness and uniaxial tension results. EAPJ of high-entropy alloy can overcome the disadvantage of fusion welding.

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This work was supported by National Research Foundation of Korea (NRF) Grants funded by Korea government (MSIT) (2018R1A2B6006856, 2019M3D1A1079215, 2019R1A2C2009939, and 2020R1A5A6017701). The Institute of Engineering Research at Seoul National University provided research facilities for this work.

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Jo, MG., Nguyen, T.A.N., Park, S. et al. Electrically Assisted Solid-State Joining of CrMnFeCoNi High-Entropy Alloy. Metall Mater Trans A 51, 6142–6148 (2020). https://doi.org/10.1007/s11661-020-06035-1

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  • DOI: https://doi.org/10.1007/s11661-020-06035-1