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Investigation of the physico-technological features of the hydro-vacuum cleaning process for the high-entropy alloy CoCrFeNiMn produced from industrial ferroalloysстатья
- Авторы: Jandieri G., Sakhvadze D., Saralidze B., Sakhvadze G.
- Журнал: Canadian Metallurgical Quarterly
- Год издания: 2025
- Издательство: Canadian Institute of Mining, Metallurgy and Petroleum
- Местоположение издательства: Canada
- Первая страница: 1
- Последняя страница: 21
- DOI: 10.1080/00084433.2025.2571297
- Аннотация: This study reveals the hydro physical mechanism of hydro-vacuum, shockwave and cavitation-pulsation counter gravity flotational extraction of non-metallic micro inclusions inherent in the liquid high-entropy alloy CoCrFeNiMn (HEA) obtained by an original method of combined induction remelting of low- and carbon-free ferroalloys with an elevated content of target metals. The effectiveness of the hydro-vacuum technology of vertical suction, confuser-convective acceleration, and diffusion-hydro mechanical dispersion of an upward flow of molten metal superheated by 100–150 °C is theoretically substantiated and experimentally proven. It has been established that vortex-like radial twisting of tangentially directed cavitation currents in the thrust-forming high-speed annular flow of water-liquid-metal pulp formed in the process of counter-gravity acceleration, with subsequent asymmetric slamming of the caverns formed in it, is the main conditioning factor for generation of ultra-frequency shock waves of rarefaction and flotational supplanting of relatively light nonmetallic inclusions from atomised drop-liquid particles of HEA. The powder obtained by the proposed method, by its purity 98.7–99.4% and hardness 250–300 HV0.5, is practically identical to similar high-entropy materials synthesis,ed from pure metals. The findings can contribute to stimulating the development of the proposed cost-effective and easily scalable approach to the production and cleaning of HEAs of different systems.
- Добавил в систему: Джандиери Гиго Владимирович