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Исследование микроструктуры и свойств сплавов Zn – 1 % Mg – 0,1 % Dy и Zn – 1 % Mg – 0,1 % Mn после кручения под высоким давлением

Н. С. Мартыненко, Д. Р. Темралиева, Н. Ю. Табачкова, О. В. Рыбальченко, Е. А. Лукьянова, А. В. Колтыгин, С. В. Добаткин

Аннотация


Исследованы микроструктура, механические свойства и коррозионная стойкость перспективных медицинских сплавов Zn – 1 % Mg – 0,1 % Dy и Zn – 1 % Mg – 0,1 % Mn после кручения под высоким давлением (КВД). Показано, что КВД способствует формированию в обоих сплавах ультрамелкозернистой структуры с размерами зерна α-Zn 450 – 700 нм, измельчению зернограничной магниевой фазы до наноразмеров и выделению частиц, богатых Mn и Dy. Такое измельчение структуры способствует одновременному росту прочности и пластичности сплавов без изменения их коррозионной стойкости. При этом скорость коррозии сплавов как до, так и после КВД не превышает 0,35 мм/год.


Ключевые слова


цинковые сплавы; кручение под высоким давлением; микроструктура; прочность; пластичность; коррозионная стойкость

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Литература


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DOI: https://doi.org/10.30906/mitom.2024.9.48-56

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