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Влияние термической обработки на микроструктуру и механические свойства никелевого суперсплава GH3536, полученного селективным лазерным плавлением

Жэнь Юньпэн, Ли Чжиюй, Чэнь Янь, Синь Чжидуо, Е Юнься, Лу Хэн, Вань Ханьюй, Чэн Ли, Хэ Кунь, Ту Синьчэн, Хань Цин

Аннотация


Исследовано влияние термической обработки на механические свойства и микроструктуру жаропрочного никелевого сплава GN3536, полученного селективным лазерным плавлением. С повышением температуры закалки сплава предел прочности и предел текучести при статическом растяжении снижаются, а относительное удлинение увеличивается. После закалки от 1100 °C, 1 ч и старения при 700 °C, 10 ч характер разрушения сплава изменяется от хрупкого к вязкому, прочность и твердость снижаются, а пластичность возрастает в ~ 3,5 раза по сравнению с исходными характеристиками.

Ключевые слова


refractory nickel alloys; selective laser melting; quenching; aging; microstructure; mechanical properties

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Литература


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DOI: https://doi.org/10.30906/mitom.2021.7.25-31

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