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Контроль крупных выделений нитрида титана в высокопрочной низколегированной стали

Лю Тао, Чен Дэн Фу, Лун Муцзюнь, Лю Пэн, Дуань Хуамэй, Гуй Линьтао, Фань Хэлинь, Чэнь Хуабяо

Аннотация


Исследовано влияние добавок титана и азота в высокопрочную низколегированную сталь 0,16 % С - 1 % Mn, а также скорости охлаждения при кристаллизации на выделения нитрида титана TiN и комплексных частиц TiN - CaS. Проанализированы процессы формирования и роста частиц TiN и TiN × CaS в твердо-жидкой зоне с использованием термодинамической модели диффузионного роста. Проведена экспериментальная проверка термодинамических расчетов. Осуществлен контроль стали на наличие крупных включений TiN.

Ключевые слова


включения TiN; комплексные включения TiN - CaS; термодинамика выделения; кинетика роста; контроль выделений; TiN inclusions; complex TiN - CaS inclusions; precipitation thermodynamics; growth kinetics; control of precipitates

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Литература


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