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Влияние времени и температуры изотермической закалки на микроструктуру и механические свойства бейнитного серого чугуна

Т. Саркар, П. К. Бозе, Г. Сутрадхар

Аннотация


Исследованы механические свойства легированного медью бейнитного серого чугуна после изотермической закалки на бейнит при разных температурах и выдержках. Определена микроструктура чугуна методами световой, электронной сканируюшей микроскопии и рентгеновской дифракции. Установлена зависимость твердости, предела прочности и относительного удлинения от количества аустенита и содержания в нем углерода, которые определяются температурой и продолжительностью изотермической выдержки.

Ключевые слова


бейнитные серый чугун; микроструктура; механические свойства; температура изотермической выдержки; продолжительность выдержки; bainitic gray cast iron; microstructure; mechanical properties; temperature of isothermal hold; duration of isothermal hold

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Литература


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DOI: https://doi.org/10.30906/mitom.2019.9.27-33

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