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https://elib.bsu.by/handle/123456789/271106| Title: | Влияние ионного облучения на усталость прессованных профилей сплава системы Al-Cu-Mg |
| Other Titles: | Effect of ion irradiation on fatigue of Al-Cu-Mg alloy pressed profiles / Natalia Gushchina, Vladimir Ovchinnikov, Konstantin Shalomov, Dmitriy Vichuzhanin |
| Authors: | Гущина, Н. В. Овчинников, В. В. Шаломов, К. В. Вичужанин, Д. И. |
| Keywords: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика |
| Issue Date: | 2021 |
| Publisher: | Минск : БГУ |
| Citation: | Взаимодействие излучений с твердым телом : материалы 14-й Междунар. конф., посвящ. 100-летию Белорус. гос. ун-та, Минск, Беларусь, 21-24 сент. 2021 г. / Белорус. гос. ун-т ; редкол.: В. В. Углов (гл. ред.) [и др.]. – Минск : БГУ, 2021. – С. 274-276. |
| Abstract: | Проведено исследование влияния облучения ионами Ar+ с энергией 20 кэВ на сопротивление усталости горячепрессованных профилей толщиной 6 мм из сплава Д16 системы Al-Cu-Mg после закалки и естественного старения. Установлено, что кратковременное двухстороннее облучение ионами Ar+ флюенсами F = 2·10 15 и 1·10 16 см -2 при отсутствии нагрева образцов приводит к существенному увеличению количества циклов до разрушения в условиях пониженных амплитуд нагрузки σ/σ в = 0.3. Максимальное увеличение в 2.4 раза наблюдается при меньшем флюенсе ионов F = 2·10 15 см-2 |
| Abstract (in another language): | The study of the effect of irradiation with Ar+ ions on the fatigue resistance of hot-pressed profiles 6 mm thick made of alloy D16 of the Al-Cu-Mg system after quenching and natural aging has been carried out. The samples were irradiated using an ILM-1 ion-beam treatment facility equipped with a PULSAR-1M ion source based on a glow discharge with a cold hollow cathode. The following irradiation parameters were used: E = 20 keV, j = 200 μA/cm2 , F = 2·10 15 and 1·10 16 cm-2 . The maximum temperature to which the samples were heated during irradiation did not exceed 40°C. The specimens were tested on an INSTRON 8801 servo-hydraulic test rig. To determine the Weller fatigue curve, cyclic fatigue tests were performed in a sinusoidal cycle with a loading frequency of 3 Hz. The cycle unbalance factor (asymmetry coefficient) is −1. It was found that short-term double-sided irradiation with Ar+ ions with an energy of 20 keV with the indicated fluences in the absence of heating of the samples leads to a significant increase in the number of cycles to failure under conditions of reduced load amplitudes σ/σ u = 0.3. The maximum increase in 2.4 times is observed at a lower ion fluence F = 2·10 15 cm-2. This phenomenon may be due to the fact that under conditions of high-cycle fatigue, only small elastic deformations take place. In addition, the surface and volume of the irradiated sample undergo "instantaneous" (within a few seconds) radiation annealing with an ion beam, as a result of which both the surface and the volume are practically freed from deformation defects. Because of this, destruction begins from the surface of the sample much later, since the processes of damage accumulation and cracking develop much more slowly. In the case of low-cycle fatigue, elastoplastic deformations take place and defects accumulate over the entire cross section of the specimen. The data obtained indicate the possibility of using ion-beam treatment at the finishing stages of the production of promising aluminum alloys |
| Description: | Секция 3. Модификация свойств материалов = Section 3. Modification of material properties |
| URI: | https://elib.bsu.by/handle/123456789/271106 |
| ISSN: | 2663-9939 (Print) 2706-9060 (Online) |
| Sponsorship: | Работа выполнена при частичной поддержке проекта РФФИ № 19-08-00802-а |
| Appears in Collections: | 2021. Взаимодействие излучений с твердым телом |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 274-276.pdf | 289,64 kB | Adobe PDF | View/Open |
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