blackmetИзвестия высших учебных заведений. Черная МеталлургияIzvestiya. Ferrous Metallurgy0368-07972410-2091National University of Science and Technology "MISIS"10.17073/0368-0797-2023-2-197-205blackmet-2515Research ArticleМАТЕРИАЛОВЕДЕНИЕMATERIAL SCIENCEЭлектронно-лучевое аддитивное производство композиционного сплава из нержавеющей стали и алюминиевой бронзы: микроструктура и механические характеристикиElectron beam additive manufacturing of composite alloy from stainless steel and aluminum bronze: Microstructure and mechanical propertieshttps://orcid.org/0000-0001-8779-3784ЗыковаА. П.ZykovaA. P.

Анна Петровна Зыкова, к.ф.-м.н., старший научный сотрудник, заведующий лабораторией структурного дизайна перспективных материалов

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

Anna P. Zykova, Cand. Sci. (Phys.-Math.), Senior Researcher, Head of the Laboratory of Structural Design of Advanced Materials

2/4 Akademi­cheskii Ave., Tomsk 634055, Russian Federation

zykovaap@mail.ruhttps://orcid.org/0000-0001-8648-0743ПанфиловА. О.PanfilovA. O.

Александр Олегович Панфилов, аспирант, младший научный сотрудник лаборатории структурного дизайна перспективных материалов

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

Aleksandr O. Panfilov, Postgraduate, Junior Researcher of the Laboratory of Structural Design of Advanced Materials

2/4 Akademi­cheskii Ave., Tomsk 634055, Russian Federation

alexpl@ispms.ruhttps://orcid.org/0000-0002-1983-4385ЧумаевскийА. В.ChumaevskiiA. V.

Андрей Валерьевич Чумаевский, к.т.н., старший научный сотрудник лаборатории локальной металлургии в аддитивных технологиях

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

Andrei V. Chumaevskii, Cand. Sci. (Eng.), Senior Researcher of the Laboratory of Local Metallurgy in Additive Technologies

2/4 Akademi­cheskii Ave., Tomsk 634055, Russian Federation

tch7av@gmail.comhttps://orcid.org/0000-0002-4334-7616ВоронцовА. В.VorontsovA. V.

Андрей Владимирович Воронцов, к.т.н., научный сотрудник лаборатории локальной металлургии в аддитивных технологиях

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

Andrei V. Vorontsov, Cand. Sci. (Eng.), Research Associate of the Laboratory of Local Metallurgy in Additive Technologies

2/4 Akademi­cheskii Ave., Tomsk 634055, Russian Federation

vav@ispms.ruhttps://orcid.org/0000-0003-0702-7639ТарасовС. Ю.TarasovS. Yu.

Сергей Юльевич Тарасов, д.т.н., главный научный сотрудник лаборатории физики упрочнения поверхности

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

Sergei Yu. Tarasov, Dr. Sci. (Eng.), Chief Researcher of the Laboratory of Physics of Surface Hardening

2/4 Akademi­cheskii Ave., Tomsk 634055, Russian Federation

tsy@ispms.ruИнститут физики прочности и материаловедения Сибирского отделения РАНРоссияInstitute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of SciencesRussian Federation202306062023662197205Copyright © Зыкова А.П., Панфилов А.О., Чумаевский А.В., Воронцов А.В., Тарасов С.Ю., 20232023Зыкова А.П., Панфилов А.О., Чумаевский А.В., Воронцов А.В., Тарасов С.Ю.Zykova A.P., Panfilov A.O., Chumaevskii A.V., Vorontsov A.V., Tarasov S.Y.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://fermet.misis.ru/jour/article/view/2515

Исследованы микроструктура, фазовый состав и механические характеристики композита сталь – бронза, полученного методом электронно-лучевого аддитивного производства c одновременной подачей проволок алюминиевой бронзы БрАМц9-2 и нержавеющей стали 06Х18Н9Т. Методом рентгеноструктурного анализа установлено, что композит содержит 25 % (об.) алюминиевой бронзы и это приводит к формированию трехфазной структуры, состоящей из зерен γ-Fe, α-Fe и α-Cu. По данным сканирующей электронной микроскопии объемная доля аустенита, феррита и бронзы в композите сталь – 25 % бронзы составляет 40,7, 35,7 и 23,6 % соответственно. Неравновесные условия процесса электронно-лучевого аддитивного производства приводят к выделению дисперсных частиц в зернах аустенита и феррита. В зернах аустенита выделяются дисперсионно упрочняемые частицы меди со средним размером частиц 40 нм, объемная доля которых составляет 47 %. В зернах феррита выделяются дисперсионно упрочняемые частицы NiAl с объемной долей 20 %, средний размер которых составляет 44 нм. Данные просвечивающей электронной микроскопии свидетельствуют о когерентном сопряжении решеток дисперсионно упрочняемых частиц с матрицей. Такая структура композита обеспечивает повышение предела текучести и предела прочности в среднем на 400 и 600 МПа по сравнению с пределом текучести и пределом прочности стали 06Х18Н9Т, полученной электронно-лучевым аддитивным производством без добавления бронзы. Микротвердость композита в среднем составляет 2,2 ГПа, что на 0,4 ГПа выше, чем у стали 06Х18Н9Т, полученной электронно-лучевым аддитивным производством без добавления бронзы.

The authors investigated the microstructure, phase composition and mechanical properties of the steel-bronze composite obtained by electron beam additive manufacturing with simultaneous supply of aluminum bronze wires BrAMc9-2 and stainless steel 06Kh18N9T. X-ray diffraction analysis revealed that the composite contains 25 % (vol.) of aluminum bronze, which leads to the formation of a three-phase structure consisting of γ-Fe, α-Fe and α-Cu grains. According to scanning electron microscopy, the volume fraction of austenite, ferrite and bronze in the steel – 25 % bronze composite is 40.7, 35.7 and 23.6 %, respectively. Unstable conditions of the electron beam additive manufacturing process lead to the release of dispersed particles in austenite and ferrite grains. Dispersion-hardened copper particles with an average particle size of 40 nm, the volume fraction of which is 47 %, are isolated in austenite grains. Dispersion-hardened NiAl particles with a volume fraction of 20 % are isolated in ferrite grains, the average size of which is 44 nm. Transmission electron microscopy data indicate the coherent conjugation of arrays of dispersion-hardened particles with the matrix. Such a composite structure provides an increase in yield strength and tensile strength by an average of 400 and 600 MPa compared with yield strength and tensile strength of 06Kh18N9T steel obtained by electron beam additive manufacturing without bronze addition. Microhardness of the composite is on average 2.2 GPa, which is 0.4 GPa higher than that of 06Kh18N9T steel obtained by electron beam additive manufacturing without bronze addition.

электронно-лучевая аддитивная технологиядвухпроволочное аддитивное производствоалюминиевая бронзааустенитная сталькомпозит сталь – бронзамикроструктурамеханические свойстваelectron beam additive technologytwo-wire additive manufacturingaluminum bronzeaustenitic steelsteel–bronze compositemicrostructuremechanical propertiesРабота выполнена в рамках гранта Президента Российской Федерации для государственной поддержки ведущих научных школ НШ-1174.2022.4 и государственного задания Института физики прочности и материаловедения Сибирского отделения РАН, проект FWRW-2021-0012. Исследования выполнены с использованием оборудования ЦКП «Нанотех» Института физики прочности и материаловедения Сибирского отделения РАН. Авторы выражают благодарность профессору А.И. Лоткову за ценные замечания, которые помогли улучшить статью.The work was supported by the grant No. NSh-1174.2022.4 of the President of the Russian Federation for state support of leading scientific schools. 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The authors declare that there are no conflicts of interest present.