ПРИМЕНЕНИЕ СИЛЬНОТОЧНЫХ ИМПУЛЬСНЫХ ЭЛЕКТРОННЫХ ПУЧКОВ ДЛЯ МОДИФИЦИРОВАНИЯ ПОВЕРХНОСТИ ЛОПАТОК ГАЗОТУРБИННЫХ ДВИГАТЕЛЕЙ. ОБЗОР
Известия вузов. Порошковая металлургия и функциональные покрытия(2015)
摘要
The experimental data on the influence of irradiation by heavy-current pulsed beams (HPEBs) on physicochemical state of surface layers and operational properties of gas-turbine engines made of heat-resistant materials are analyzed. It is shown that the HPEB of the microsecond duration is a highly efficient tool for modifying the surface of blades of the turbine and compressor, which provides the performance of high-speed thermal treatment (quenching), material recrystallization in surface layers of 20–30 μm, and surface cleaning and smoothing. These processes cause an increase in fatigue strength of blades (by 10–30 %), heat resistance (by a factor of 2–3), and resistance against salt corrosion (up to sixfold).
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关键词
beams,electron,blades,heavy-current,gas-turbine
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