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Анализ структуры и свойств трубного соединения из жаропрочного сплава HP40NbTi, полученного в режиме импульсной GTAW-сварки
Аннотация
Методами световой и электронной микроскопии, рентгеноспектрального микроанализа исследованы микроструктура и фазовый состав трубного сварного соединения из сплава HP40NbTi на основе системы Fe – 25Cr – 35Ni, выполненного в режиме импульсной GTAW-сварки. Определены его кратковременные и длительные механические свойства. Установлено, что более равномерное температурное поле с пониженным уровнем температур, возникающее при импульсной сварке, по сравнению с полем при стандартной сварке, предотвращает активное развитие фазового превращения NbC ® G в сплаве HP40NbTi. Это способствует формированию более однородной структуры металла шва, большей равнопрочности различных зон сварного соединения и повышению его эксплуатационных свойств.
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Литература
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DOI: https://doi.org/10.30906/mitom.2025.4.46-56
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