fwjТрение и и износTitle in english0000-00000000-0000AGU10.32864/0202-4977-2025-46-1-58-65fwj-52Research ArticleСтатьиТриботехнические характеристики композитов БрАМц9-2/W, полученных методом фрикционной перемешивающей обработкиTribological Characteristics of BrAMts9-2/W Composites Prepared by Friction Stir ProcessingЧеремновА. М.CheremnovA. M.

пр. Академический, 2/4, г. Томск 634055 

pr. Akademicheskii, 2/4, Tomsk 634055 

amc@ispms.ruКняжевЕ. О.KnyazhevE. O.

пр. Академический, 2/4, г. Томск 634055 

pr. Akademicheskii, 2/4, Tomsk 634055 

УтягановаВ. Р.UtyaganovaV. R.

пр. Академический, 2/4, г. Томск 634055 

pr. Akademicheskii, 2/4, Tomsk 634055 

ЧумаевскийА. В.ChumaevskiiA. V.

пр. Академический, 2/4, г. Томск 634055 

pr. Akademicheskii, 2/4, Tomsk 634055 

ЗыковаА. П.ZykovaA. P.

пр. Академический, 2/4, г. Томск 634055 

pr. Akademicheskii, 2/4, Tomsk 634055 

СавченкоН. Л.SavchenkoN. L.

пр. Академический, 2/4, г. Томск 634055 

pr. Akademicheskii, 2/4, Tomsk 634055 

ТарасовС. Ю.TarasovS. Yu.

пр. Академический, 2/4, г. Томск 634055 

pr. Akademicheskii, 2/4, Tomsk 634055 

Институт физики прочности и материаловедения Сибирского отделения Российской академии наукРоссияInstitute of Strength Physics and Materials Science Siberian Branch of Russian Academy of SciencesRussian Federation2025280920264615865Copyright © AGU, 20262026AGUAGUhttps://fwj.ejournal.by/jour/about/submissions#copyrightNoticehttps://fwj.ejournal.by/jour/article/view/52

Изучена микроструктура, фазовый состав, механические и трибологические свойства композитов с матрицей из бронзы БрАМц9-2, армированной частицами вольфрама. Образцы с 0, 5, 10 и 15 об. % частиц W были получены методом фрикционной перемешивающей обработки (ФПО). Показано, что в результате многопроходной ФПО вольфрам-содержащих образцов формируется композиционная структура из многофазной бронзовой матрицы, состоящей из α-Cu твёрдого раствора, интерметаллидов β-Cu3Al, γ2-Al4Cu9 и равномерно распределённых в ней армирующих частиц вольфрама. При испытания на сухое трение скольжения по стальному контртелу все образцы продемонстрировали близкие значения коэффициента трения, лежащие в диапазоне 0,33—0,39. Значения интенсивности изнашивания у композитов, армированных W, были заметно меньше, чем у образцов без W. Минимальное значения интенсивности изнашивания были получены на образцах БрАМц9-2/5%W. Эффект трибоокисления в вольфрам-содержащих образцах сопровождался образованием κ-фазы Al2O3 за счёт окисления метастабильной фазы γ-Al4Cu9. Полученные композиты могут быть использованы для создания узлов трения машин и устройств, высоковольтных электрических контактов, теплоотводящих материалов и для ряда других практических применений.

The microstructure, phase composition, mechanical and tribological properties of composites with a BrAMts9-2 bronze matrix, reinforced with tungsten particles have been studied Samples with 0, 5, 10 and 15 vol. % of W particles were obtained by friction stir processing (FSP). It was shown that as a result of multi-pass FSP of tungsten-containing samples, a composite structure is formed from a multiphase bronze matrix consisting of α-Cu solid solution, intermetallic β-Cu3Al and γ2-Al4Cu9 as well as uniformly distributed reinforcement tungsten particles. During tribological tests, all samples demonstrated similar values of coefficient of friction in the range of 0.33—0.39. The wear rate values of composites reinforced with W were significantly lower than those of samples without W. The minimum wear intensity values were obtained on BrAMts9-2/5% W samples. The tribooxidation effect in tungsten-containing samples was accompanied by the formation of the κ-phase of Al2O3 due to the oxidation of the metastable phase γ-Al4Cu9. The resulting composites can be used to fabricate moving parts of machines and devices, high-voltage electrical contacts, heat-removal elements, and many other practical applications.

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The authors declare that there are no conflicts of interest present.