vsgiuВестник Сибирского государственного индустриального университетаBulletin of the Siberian State Industrial University2304 - 44972307-1710Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет"10.57070/2304-4497-2024-1(47)-58-68vsgiu-79Research ArticleРаздел 1. Физика конденсированного состоянияSection 1. Condensed Matter PhysicsЗАКОНОМЕРНОСТИ ОБРАЗОВАНИЯ ДЕФЕКТОВ И НЕОДНОРОДНОСТЕЙ СТРУКТУРЫ ПРИ ФРИКЦИОННОЙ ПЕРЕМЕШИВАЮЩЕЙ ОБРАБОТКЕ ИЗДЕЛИЙ ИЗ ТИТАНОВОГО СПЛАВА, ПОЛУЧЕННЫХ МЕТОДОМ ПРОВОЛОЧНОЙ ЭЛЕКТРОННО-ЛУЧЕВОЙ АДДИТИВНОЙ ТЕХНОЛОГИИREGULARITIES OF DEFECTS AND STRUCTURAL INHOMOGENEITIES FORMATION DURING FRICTION STIR PROCESSING OF TITANIUM ALLOY PRODUCTS OBTAINED BY WIRE-FEED ELECTRON BEAM ADDITIVE MANUFACTURINGЧеремновАндрей МаксимовичCheremnovAndrei 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 в аддитивных 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 ВалерьевичChumaevskiiAndrei 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.comКобзевАлександр ЕвгеньевичKobzevAleksandr E.

младший научный сотрудник лаборатории контроля качества материалов и конструкций

Junior researcher of Laboratory of quality control of materials and structures

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

к.ф.-м.н., ведущий научный сотрудник, заведующий лабораторией контроля качества 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 Federation202425032024015868Copyright © 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., Kobzev A., 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/79

Исследованы закономерности формирования структуры в образцах титанового сплава ВТ6св, полученных методом аддитивной электронно-лучевой проволочной технологии и подвергнутых фрикционной перемешивающей обработке. Проведенные исследования показывают, что в процессе обработки происходит интенсивное взаимодействие инструмента и материала, приводящее к значительным изменениям структуры зоны перемешивания. Взаимодействие инструмента из никелевого жаропрочного сплава и материала имеет адгезионную, механическую, термическую и диффузионную природу. Его характерные особенности определяют формирование структуры и свойств материала зоны перемешивания и, соответственно, полученных деталей. По этой причине были рассмотрены основные формируемые дефекты и неоднородности зоны перемешивания образцов в сопоставлении с процессами, происходящими в области контакта инструмента и материала. Основными изменениями в структуре титанового сплава ВТ6св после фрикционной перемешивающей обработки, обусловленными взаимодействием его с никелевым инструментом, являются формируемые области с композитной структурой с высокой локальной объемной долей интерметаллидных фаз. При обработке возможно избыточное внедрение инструмента в материал так, что в нижней части пластины происходит его контакт с подложкой. Даже незначительное углубление инструмента в подложку приводит к внедрению частиц стали в зону перемешивания за счет реализации в ней вертикального течения материала. Описанные изменения с формированием ряда неоднородностей и дефектов в структуре после обработки приводят к снижению пластичности и прочности образцов в сравнении с материалом с бездефектной структурой.

The paper studies the regularities of structure formation in samples of titanium alloy Ti–4Al–3V obtained by additive wire-feed electron beam additive manufacturing and undergone to friction stir processing. The studies conducted show that during the processing there is an intensive interaction between the tool and the material, which leads to significant changes in the structure of the stir zone. The interaction between the nickel-base superalloy tool and the material is of an adhesive, mechanical, thermal and diffusion nature. Its characteristics determine the formation of the structure and material properties of the stir zone and, consequently, of the obtained parts. For this reason, in this study, the main defects and inhomogeneities formed in the stirred zone of the samples have been considered in comparison with the processes occurring in the area of contact between the tool and the material. The main changes in the structure of the titanium alloy Ti–4Al–3V after friction stir processing, caused by its interaction with the nickel tool, are formed in the areas of the stir zone with a composite structure with a high local volume fraction of intermetallic phases. During processing, the tool can be excessively penetrated in the material in such a way that it touches the substrate in the lower part of the plate. Even a slight penetration of the tool into the substrate leads to the penetration of steel particles into the stir zone due to the vertical flow of material in the stir zone. The described changes with the formation of a number of inhomogeneities and defects in the structure after processing lead to a decrease in the plasticity and strength of the samples in comparison with the material with a defect-free structure.

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