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Влияние старения и массовой доли Al2O3 на механические свойства композита Al6O82/Al2O3, полученного литьем с перемешиванием

Н. Сираджудин, М. Абдур Рахман

Аннотация


Исследовано влияние искусственного старения на механические свойства сплава Al6O82 и композита Al6O82/(2 - 10 %)Al2O3, полученных литьем с перемешиванием (stir casting). Исследована структура с помощью сканирующего электронного микроскопа с полевой эмиссией, измерены кривые растяжения, работа удара и твердость. Показано, что увеличение доли упрочняющей фазы и искусственное старение (180 °C, 2 ч) приводят к повышению прочности на растяжение, твердости и вязкости, а также к равномерному распределению частиц Al2O3 в матрице.

Ключевые слова


литье с перемешиванием; дисперсионное твердение; композит Al6O82/Al2O3; механические свойства; микроструктура; stir casting; precipitation hardening; Al6O82/Al2O3 composite; mechanical properties; microstructure

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Литература


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DOI: https://doi.org/10.30906/mitom.2020.3.25-29

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