Эволюция микроструктуры сталеалюминиевой проволоки при деформации методом «равноканального углового прессования-волочения»
DOI:
https://doi.org/10.31489/2022No1/73-77Ключевые слова:
интенсивная пластическая деформация, микроструктура, биметаллическая проволока, сталь, алюминий, механические свойства.Аннотация
"В ходе комплекса экспериментальных исследований влияния равно-канального углового прессования-волочения на эволюцию микроструктуры и изменение механических свойств проволоки доказана принципиальная возможность и эффективность использования предлагаемого непрерывного способа для формирования ультра мелкозернистой структуры и повышения прочностных свойств сталеалюминевой проволоки. Деформирование проводилось при комнатной температуре за три прохода. Показано, что оба слоя биметаллической проволоки обрабатываются неравномерно. Алюминиевая оболочка с начальным размером зерен 22 мкм прорабатывается в среднем до 2 мкм. Стальной сердечник имеет различную величину зерна в поперечном и продольном сечениях. Так с начальным размером зерен 18 мкм после деформирования в продольном сечении размер зерен составляет порядка 10 мкм, а в поперечном – 8 мкм. Ключевые слова: интенсивная пластическая деформация, микроструктура, биметаллическая проволока, сталь, алюминий, механические свойства. "
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