blackmetИзвестия высших учебных заведений. Черная МеталлургияIzvestiya. Ferrous Metallurgy0368-07972410-2091National University of Science and Technology "MISIS"10.17073/0368-0797-2022-2-79-84blackmet-2252Research ArticleМЕТАЛЛУРГИЧЕСКИЕ ТЕХНОЛОГИИMETALLURGICAL TECHNOLOGIESО введении карбида вольфрама W2C в коррозионностойкую сталь марки 08Х18Н10Т и его влиянии на механические свойстваIntroduction of tungsten carbide into 08Kh18N10T corrosion-resistant steel and its effect on mechanical propertiesЧумановИ. В.ChumanovI. V.

Илья Валерьевич Чуманов, д.т.н., профессор, заведующий кафедрой «Техника и технологии производства материалов»

456209, Челябинская обл., Златоуст, ул. Тургенева, 16

Il'ya V. Chumanov, Dr. Sci. (Eng.), Prof., Head of the Chair "Technique and Technology of Materials Production" 

16 Turgeneva Str., Zlatoust, Chelyabinsk Region 456209

chumanoviv@susu.ruАникеевА. Н.AnikeevA. N.

Андрей Николаевич Аникеев, к.т.н., доцент кафедры «Техника и технологии производства материалов»

456209, Челябинская обл., Златоуст, ул. Тургенева, 16

Andrei N. Anikeev, Cand. Sci. (Eng.), Assist. Prof. of the Chair "Technique and Technology of Materials Production" 

16 Turgeneva Str., Zlatoust, Chelyabinsk Region 456209

anikeevan@susu.ruСедухинВ. В.SedukhinV. V.

Вадим Валерьевич Седухин, аспирант, инженер кафедры «Пирометаллургические и литейные технологии»

456209, Челябинская обл., Златоуст, ул. Тургенева, 16

Vadim V. Sedukhin, Postgraduate, Engineer of the Chair "Technique and Technology of Materials Production" 

16 Turgeneva Str., Zlatoust, Chelyabinsk Region 456209

sedukhinvv@susu.ruЮжно-Уральский государственный университет, филиал в г. ЗлатоустРоссияZlatoust Branch of South Ural State UniversityRussian Federation2022160320226527984Copyright © Чуманов И.В., Аникеев А.Н., Седухин В.В., 20222022Чуманов И.В., Аникеев А.Н., Седухин В.В.Chumanov I.V., Anikeev A.N., Sedukhin V.V.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/2252

Изучены межфазные явления и реакции между карбидом вольфрама W2C и расплавом коррозионностойкой стали с помощью экспериментов по смачиванию. Исследование рассматриваемого процесса проведено по методике высотемпературного контактного нагрева подложки W2C и металлического образца из стали марки 08Х18Н10Т. Установлено, что карбид вольфрама W2C обладает хорошими показателями смачиваемости коррозионностойкой сталью. Угол смачивания составляет 135 – 145°. Исследована поверхность подложки методом электронной сканирующей микроскопии для определения состава полученных продуктов реакции. Анализ полученных результатов позволяет констатировать, что по всей площади контакта содержание химических элементов варьируется, но картина их распределения по площади контакта равномерная. Полученные данные позволяют сделать предположение о применимости сочетания рассматриваемых компонентов для создания дисперсно-упрочненных материалов. С этой целью проведены эксперименты по получению дисперсно-упрочненных центробежно-литых заготовок различными типами литья (горизонтального и вертикального). Для получения экспериментальных материалов проводилось введение в процессе центробежного литья горизонтального и вертикального типов в слитки карбида вольфрама в количестве 1 % (по массе). После получения экспериментальных материалов проведены исследования ряда механических свойств (временное сопротивление разрыву, предел текучести и твердость). Полученные в ходе экспериментальных исследований результаты позволяют сделать вывод о том, что при применении дисперсного упрочнения в процессе центробежного литья возможно получать металлические материалы с повышенными механическими свойствами. Временное сопротивление разрыву увеличивается (в среднем по всем образцам) на 2,49 %, предел текучести – на 2,27 %, твердость – на 5,02 %. Это соотносится с положениями о физико-химических свойствах металлов при применении технологий дисперсного упрочнения.

Interfacial phenomena and reactions between tungsten semicarbide (W2C) and corrosion-resistant steel melt have been studied using wetting experiments. This process was followed by the method of high­temperature contact heating of W2C substrate and a metal sample made of 08Kh18N10T steel. It was established that wolfram carbide has good indicators of wettability by corrosion-resistant steel, wetting angle is 135 – 145°. Composition of the substrate surface has been studied by electron scanning microscopy to determine composition of reaction products. Analysis of the obtained results allows us to state that content of chemical elements varies over the entire contact area, but pattern of their distribution there is uniform. Due to the obtained data we can make an assumption about the applicability of combination of these components to create dispersed-hardened materials. To this end, experiments have been carried out to produce dispersedly hardened centrifugal cast blanks with various types of casting – horizontal and vertical. To obtain experimental materials, the horizontal and vertical type centrifugal casting was introduced into tungsten semicarbide ingots in an amount of 1 % wt. After producing experimental materials, a number of mechanical properties were studied, such as tensile strength, yield strength and hardness. The experimental results allow us to conclude that the use of dispersed hardening in process of centrifugal casting makes it possible to obtain metal materials with increased mechanical properties. Indicators of ultimate strength increase (for all samples on average) by 2.49 %, yield strength – by 2.27 %, hardness – by 5.02 %, which correlates with the provisions on metals physico-chemical properties when using dispersed hardening technologies.

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