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Влияние наночастиц TiB2 на микроструктуру и механические свойства магниевого сплава AZ91D (МЛ5), полученного методом литья с перемешиванием
Аннотация
Исследовано влияние армирования наночастицами диборида титана (TiB2 ) со средним размером 80 нм на механические свойства магниевого сплава AZ91D (российский аналог МЛ5). Армирующие частицы TiB2 в количестве 0,5 и 1,5 % (масс.) вводили в сплав методом литья с перемешиванием. Для оценки влияния армирования сплава AZ91D наночастицами TiB2 проведен микроструктурный анализ и испытания на статическое растяжение. Установлено, что введение наночастиц TiB2 значительно повышает механические свойства сплава AZ91D. Предел прочности на растяжение увеличивается на 3 % для композита с 0,5 % (масс.) TiB2 и на 10 % для композита с 1,5 (масс.) TiB2 по сравнению с пределом прочности неармированного сплава. Предел текучести также возрастает на 5 и 14 % для композитов с 0,5 и 1,5 (масс.) TiB2 соответственно. Кроме того, микротвердость существенно повышается при добавлении TiB2. Полученные результаты показали, что армирование магниевого сплава AZ91D наночастицами TiB2 повышает эффективность его использования для изготовления массивных инженерных конструкций.
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DOI: https://doi.org/10.30906/mitom.2025.4.32-33
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