vsgiuВестник Сибирского государственного индустриального университетаBulletin of the Siberian State Industrial University2304 - 44972307-1710Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет"10.57070/2304-4497-2024-2(48)-33-42vsgiu-58Research ArticleРаздел 1. Физика конденсированного состоянияSection 1. Condensed Matter PhysicsОСОБЕННОСТИ ВЗАИМОДЕЙСТВИЯ ИНСТРУМЕНТА ИЗ СПЛАВА ЖС6У И АДДИТИВНО ПОЛУЧЕННОГО ТИТАНОВОГО СПЛАВА ПРИ ФРИКЦИОННОЙ ПЕРЕМЕШИВАЮЩЕЙ ОБРАБОТКЕFEATURES OF INTERACTION BETWEEN TOOL MADE OF ZHS6U ALLOY AND ADDITIVELY PRODUCED TITANIUM ALLOY DURING FRICTION STIR PROCESSINGЧеремновАндрей МаксимовичCheremnovAndrey M.

младший научный сотрудник лаборатории структурного дизайна перспективных материалов

postgraduate student, Junior researcher at the Laboratory of Structural Design ofAdvanced Materials

amc@ispms.ruhttps://orcid.org/0000-0003-0725-1219ГурьяновДенис АндреевичGurianovDenis A.

к.т.н., младший научный сотрудник лаборатории локальной металлургии ваддитивных технологиях

Cand. Sci. (Eng.), Junior researcher at the Laboratory of Local Metallurgy in Additive Technologies

desa-93@mail.ruhttps://orcid.org/0000-0002-1983-4385ЧумаевскийАндрей ВалерьевичChumaevskiiAndrey V.

д.т.н., ведущий научный сотрудник лаборатории локальной металлургии в аддитивных технологиях

Cand. Sci. (Eng.), Leading researcher of Laboratory of Local Metallurgy in Additive Technologies

tch7av@gmail.comhttps://orcid.org/0000-0003-0348-1869КобзевАлександр Евгеньевич

младший научный сотрудник лаборатории контроля качества материалов и конструкций

kobzev.tomsk@mail.ruhttps://orcid.org/0000-0003-0348-1869РубцовВалерий ЕвгеньевичRubtsovValery E.

к.ф.-м.н., ведущий научный сотрудник, заведующий лабораторией контролякачества материалов и конструкций

Cand. Sci. (Phys.-math.), Leading researcher, Head of Laboratory of quality control of materials and structures

rvy@ispms.ruИнститут физики прочности и материаловедения СО РАНРоссияInstitute of Strength Physics and Materials Science of Siberian Branch of Russian Academy of SciencesRussian FederationИнститут физики прочности и материаловедения СО РАНRussian FederationInstitute of Strength Physics and Materials Science of Siberian Branch of Russian Academy of SciencesRussian FederationИнститут физики прочности и материаловедения СО РАНRussian FederationInstitute of Strength Physics and Materials Science of Siberian Branch of Russian Academy of SciencesRussian Federation202430062024023342Copyright © Черемнов А.М., Гурьянов Д.А., Чумаевский А.В., Кобзев А.Е., Рубцов В.Е., 20252025Черемнов А.М., Гурьянов Д.А., Чумаевский А.В., Кобзев А.Е., Рубцов В.Е.Cheremnov A., Gurianov D., Chumaevskii A., Кобзев А.Е., Rubtsov V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestnik.sibsiu.ru/jour/article/view/58

Исследованы особенности взаимодействия титанового сплава ВТ6св, подложки из нержавеющей стали марки 12Х18Н10Т и инструмента из никелевого жаропрочного сплава ЖС6У при фрикционной перемешивающей обработке. Показано, что механизм взаимодействия инструмента и материала при фрикционной перемешивающей обработке может претерпевать значительные изменения за счет внедрения в зону контакта второго материала. Последовательность процесса изнашивания инструмента в виде постепенного формирования трибологического слоя из механической смеси интерметаллидных фаз и карбидов сохраняется, но интенсивность износа увеличивается. Обнаружено, что даже небольшое избыточное внедрение пина инструмента в подложку приводит к замешиванию ее фрагментов в материал заготовки, что изменяет процесс течения и переноса металла по контуру инструмента.  Исследования с применением методики быстрой остановки процесса обработки с вырезкой участка с внедренным в заготовку инструментом позволили определить, каким образом в материал заготовки внедряются фрагменты инструмента и подложки. Обнаружено, что это происходит за счет образования узких потоков по контуру инструмента с ярко выраженной вертикальной направленностью. Внедрение фрагментов инструмента в материал зоны перемешивания происходит непрерывно в процессе обработки, показывая реализацию как ламинарных, так и вихревых потоков металла. Взаимодействие потоков металла титанового сплава и потоков от подложки имеет сложный и неоднородный характер. Это связано с давлением, оказываемым инструментом на заготовку за счет силы прижима и усилия сопротивления продольному перемещению инструмента.

In the work the characteristics of interaction of titanium alloy Ti‒6Al‒4V, substrate from stainless steel SS321 and tool from nickel-based superalloy ZhS6U at friction stir processing are studied. It is shown that the mechanism of tool-material interaction during friction stir processing can undergo significant changes due to the penetration of a second material into the contact zone. The basic sequence of tool wear process in the form of gradual formation of tribological layer from mechanical mixture of intermetallic phases and carbides is preserved, but the wear intensity increases. It was found that even a small excessive penetration of the tool pin into the substrate leads to stirring of its fragments into the workpiece material, which changes the process of flow and metal transfer along the tool contour.  Studies using the technique of quick stopping the processing with cutting out the area with the tool penetrated into the workpiece allowed us to determine how tool and substrate fragments are penetrated into the workpiece material. It was found that the substrate material is penetrated into the stir zone by the formation of narrow streams along the contour of the tool with a pronounced vertical orientation. The penetration of tool fragments into the material of the stir zone occurs continuously during the processing, showing the realization of both laminar and vortex metal flows. The interaction between the metal flows of the titanium alloy and the flows from the substrate has a complex and heterogeneous character and is related to the pressure exerted by the tool on the workpiece due to the clamping force and the force resisting the longitudinal movement of the tool.

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