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Послесварочная термическая обработка сварных соединений VPTIG из алюминиевого сплава 2219
Аннотация
Исследовано влияние послесварочной термической обработки на структуру и свойства сварных соединений VPTIG из алюминиевого сплава 2219 (сварка в инертных газах вольфрамовым электродом с переменной полярностью). Температура закалки, выбранная на основании результатов ДСК анализа, составляла 535 °C, длительность выдержки 60 мин. Установлен режим старения по результатам определения микротвердости сварного соединения после различных режимов термической обработки: температура старения 175 °C, длительность 16 ч. Такой режим послесварочной обработки обеспечивает получение максимальных характеристик механических свойств сварного соединения. Предел прочности соединения после закалки и старения составил 410 МПа, что на ~ 50 % выше, чем перед термической обработкой.
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Литература
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DOI: https://doi.org/10.30906/mitom.2025.4.62-70
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