cvmetИзвестия вузов. Цветная металлургияIzvestiya. Non-Ferrous Metallurgy0021-34382412-8783НИТУ МИСИС10.17073/0021-3438-2020-3-51-58cvmet-1132Research ArticleМеталловедение и термическая обработкаPhysical Metallurgy and Heat TreatmentВлияние добавок Ti И TiH2 на структуру и свойства медных сплавов для алмазного режущего инструментаThe effect of Ti and TiH2 additives on structure and mechanical properties of copper alloys for diamond cutting toolsЛогиновП. А.LoginovP. A.

Кандидат технических наук, наусный сотрудник Научно-учебного центра (НУЦ) СВС МИСиС-ИСМАН.

119049, Москва, Ленинский пр-т, 4

Cand. Sci. (Tech.), research scientist of the Scientific-Educational Centre of SHS of MISIS—ISMAN.

119049, Moscow, Leninskii pr., 4

pavel.loginov.misis@list.ruВоротылоС.VorotiloS.

Инженер НУЦ СВС МИСиС-ИСМАН.

119049, Москва, Ленинский пр-т, 4

Engineer of the Scientific-Educational Centre of SHS of MISIS—ISMAN.

119049, Moscow, Leninskii pr., 4

stepan.vorotylo@gmail.comСидоренкоД. А.SidorenkoD. A.

Кандидат технических наук, наусный сотрудник НУЦ СВС МИСиС-ИСМАН.

119049, Москва, Ленинский пр-т, 4

Cand. Sci. (Tech.), research scientist of the Scientific-Educational Centre of SHS of MISIS—ISMAN.

119049, Moscow, Leninskii pr., 4

dsidorenko@inbox.ruЛопатинаЮ. В.LopatinaYu. V.

Лаборант НУЦ СВС МИСиС-ИСМАН.

119049, Москва, Ленинский пр-т, 4

Laboratory assistant of the Scientific-Educational Centre of SHS of MISIS—ISMAN.

119049, Moscow, Leninskii pr., 4

jullylop1099@yandex.ruОкубаевА.OkubaevA.

Лаборант НУЦ СВС МИСиС-ИСМАН.

119049, Москва, Ленинский пр-т, 4

Laboratory assistant of the Scientific-Educational Centre of SHS of MISIS—ISMAN.

119049, Moscow, Leninskii pr., 4

mr.aytkanov@mail.ruШвындинаН. В.ShvyndinaN. V.

Инженер НУЦ СВС МИСиС-ИСМАН.

119049, Москва, Ленинский пр-т, 4

Engineer of the Scientific-Educational Centre of SHS of MISIS—ISMAN.

119049, Moscow, Leninskii pr., 4

natali19-03@list.ruЛевашовЕ. А.LevashovE. A.

Доктор технических наук, профессор, акад. РАЕН, зав. кафедрой порошковой металлургии и функциональных покрытий НИТУ «МИСиС», директор НУЦ СВС МИСиС-ИСМАН.

119049, Москва, Ленинский пр-т, 4

Dr. Sci. (Tech.), prof., acad. of Russian Academy of Natural Science, chair of the Department of powder metallurgy and functional coatings of National University of Science and Technology «MISIS», head of Scientific-Educational Centre of SHS of MISIS—ISMAN.

119049, Moscow, Leninskii pr., 4

levashov@shs.misis.ruНациональный исследовательский технологический университет (НИТУ) МИСИСРоссияScientific-Educational Centre of SHS of MISIS—ISMANRussian Federation202016062020035158Copyright © Логинов П.А., Воротыло С., Сидоренко Д.А., Лопатина Ю.В., Окубаев А., Швындина Н.В., Левашов Е.А., 20202020Логинов П.А., Воротыло С., Сидоренко Д.А., Лопатина Ю.В., Окубаев А., Швындина Н.В., Левашов Е.А.Loginov P.A., Vorotilo S., Sidorenko D.A., Lopatina Y.V., Okubaev A., Shvyndina N.V., Levashov E.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://cvmet.misis.ru/jour/article/view/1132

Исследовано влияние добавок титана и гидрида титана на структуру, механические свойства и износостойкость медных сплавов, предназначенных для использования в качестве связки алмазного режущего инструмента. Порошковые смеси Cu—Ti и Cu—TiH2 были получены методом механического легирования в планетарной центробежной мельнице. Такая обработка позволила получить однофазные порошки твердого раствора на основе меди в системе Cu—Ti и двухфазные на основе меди с равномерно распределенными субмикронными частицами TiH2 в системе Cu- TiH2. Установлено, что максимальными механическими свойствами характеризуются компактные образцы составов Cu—2,5%Ti и Cu—10%TiH2 (в 2,0—3,5 раза выше, чем у чистой меди). Упрочнение в этих сплавах реализуется по твердорастворному механизму и благодаря формированию фазы Cu3Ti3O. Зерна данной фазы имеют более высокую дисперсность в сплавах, где в качестве титансодержащей добавки использовался TiH2, за счет чего достигаются высокие значения предела прочности при изгибе (920 МПа) и твердости (114 HB). По результатам сравнительных трибологических испытаний установлено, что лучшей износостойкостью обладают образцы состава Cu—10%TiH2. Приведенный износ данных образцов после испытаний по схеме «стержень-диск» был на порядок меньше, чем у чистой меди, и в 5 раз ниже, чем у образцов Cu-2,5%Ti.

The study covers the effect of titanium and titanium hydride additives on the structure, mechanical properties, and wear resistance of copper alloys to be used as a binder for diamond cutting tools. Cu-Ti and Cu–TiH2powder mixtures were obtained by mechanical alloying in a planetary ball mill. This treatment made it possible to obtain single-phase copper-based solid solution powders in the Cu-Ti system and two-phase copper-based powders with uniformly distributed submicron TiH2 particles in the Cu-TiH2 system. It was found that Cu-2.5%Ti and Cu-10%TiH2 compact samples feature by maximum mechanical properties (2.0-3.5 times higher than that of pure copper). Hardening in these alloys is implemented by the solid-solution mechanism and due to the Cu3Ti3O phase formation. Grains of this phase have a higher dispersion in alloys with TiH2 used as a titanium-containing additive. This provides a high value ofbending strength (920 MPa) and hardness (114 HB). According to the results of comparative tribological tests, it was found that Cu—10%TiH2 samples have the best wear resistance. After pin-on-disk tests, the equivalent wear of these samples was an order of magnitude less than that of pure copper and 5 times lower than that of Cu—2.5%Ti samples.

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