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Кристаллографические особенности фазовых превращений в высокопрочной низкоуглеродистой трубной стали

М. Л. Лобанов, Д. Д. Сацкий, Н. В. Урцев, М. А. Зорина, В. Ю. Ярков

Аннотация


Исследована трубная сталь 06Г2МБ после горячей прокатки и последующей термической обработки — аустенитизации при 980 °C, 30 мин и охлаждения с разными скоростями. Методами ориентационной микроскопии и кристаллографического анализа с использованием различных ориентационных соотношений показана возможность установления структурных и текстурных характеристик деформированного аустенита в стали по продуктам превращения (мартенсита, бейнита). Показано, что кристаллографическая текстура, возникающая в результате многовариантного γ → α-превращения в стали 06Г2МБ, может быть объяснена зарождением α-фазы на кристаллографически упорядоченных границах между деформированными зернами γ-фазы.

Ключевые слова


высокопрочная низколегированная трубная сталь; контролируемая термомеханическая обработка; a-g-превращение; мартенсит; бейнит; ориентационная микроскопия; ориентационные соотношения

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DOI: https://doi.org/10.30906/mitom.2024.5.3-13

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