Rapid post-processing device and method for additive manufacturing of high-entropy alloy slender component

According to the rapid post-processing device and method for the additive manufacturing high-entropy alloy thin and long component, the additive manufacturing high-entropy alloy thin and long component is subjected to post-processing through high-energy pulse current, the laser additive manufacturing high-entropy alloy thin and long component is promoted to generate phase change and recrystallization in a short time, the plasticity and toughness are improved, and the product quality is improved. The pulse current post-processing technology can promote conversion from an FCC phase to a BCC phase in a short time, temperature rise caused by Joule heat can trigger recrystallization in a short time, and the anisotropy trend is reduced; the dislocation density in the additive manufacturing high-entropy alloy can be effectively reduced, so that the plasticity and toughness of the high-entropy alloy are improved; the characteristics that the high-entropy alloy is high in oxidation resistance, high in pulse current he