Повышение однородности литой структуры сплава на основе алюминия воздействием постоянного магнитного поля при его заливке
It is shown, that when the aluminum Al−Cu−REM alloy is poured into the mold under the condition Re> 2300, microscаle perturbations arise in the metal flow, leading to mixing of its local volumes having different temperatures due to uneven cooling of the flow. Under conditions of cooling of th...
Збережено в:
| Дата: | 2018 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | Ukrainian |
| Опубліковано: |
National Academy of Sciences of Ukraine, Physical-Technological Institute of Metals and Alloys of NAS of Ukraine
2018
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| Теми: | |
| Онлайн доступ: | https://plit-periodical.org.ua/index.php/plit/article/view/193 |
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| Назва журналу: | Casting Processes |
Репозитарії
Casting Processes| Резюме: | It is shown, that when the aluminum Al−Cu−REM alloy is poured into the mold under the condition Re> 2300, microscаle perturbations arise in the metal flow, leading to mixing of its local volumes having different temperatures due to uneven cooling of the flow. Under conditions of cooling of the casting at Fo = 5, the inhomogeneity of the distribution of inclusions of the metallic phases is fixed in the metal structure. Zones of more cooled volumes existed in the melt stream are enriched of inclusions, and ess cooled depleted. The application of a constant magnetic field to the melt (Ha = 13.6, N = 0.04, Al = 3.8), suppresses the perturbations in the melt flow, which contributes to the formation of a uniform casting structure. |
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