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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">donstu</journal-id><journal-title-group><journal-title xml:lang="en">Advanced Engineering Research (Rostov-on-Don)</journal-title><trans-title-group xml:lang="ru"><trans-title>Advanced Engineering Research (Rostov-on-Don)</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2687-1653</issn><publisher><publisher-name>Don State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.23947/2687-1653-2022-22-1-50-56</article-id><article-id custom-type="elpub" pub-id-type="custom">donstu-1834</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MACHINE BUILDING AND MACHINE SCIENCE</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАШИНОСТРОЕНИЕ И МАШИНОВЕДЕНИЕ</subject></subj-group></article-categories><title-group><article-title>Tribotechnical properties of experimental hard alloys with modified cobalt binder</article-title><trans-title-group xml:lang="ru"><trans-title>Триботехнические свойства экспериментальных твёрдых сплавов с модифицированной кобальтовой связкой</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0165-7536</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фоминов</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Fominov</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Фоминов Евгений Валерьевич, старший преподаватель кафедры «Инженерная и компьютерная графика», кандидат технических наук</p><p>344003, РФ, г. Ростов-на-Дону, пл. Гагарина, 1</p></bio><bio xml:lang="en"><p>Evgeniy V. Fominov</p><p>Rostov-on-Don</p></bio><email xlink:type="simple">fominoff83@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1505-4429</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шучев</surname><given-names>К. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Shuchev</surname><given-names>C. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шучев Константин Григорьевич, профессор кафедры «Металлорежущие станки и инструменты», кандидат технических наук, профессор</p><p>344003, РФ, г. Ростов-на-Дону, пл. Гагарина, 1</p></bio><bio xml:lang="en"><p>Constantine G. Shuchev</p><p>Rostov-on-Don</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8382-1004</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алиев</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Aliev</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алиев Мухарбий Магометович, доцент кафедры «Металлорежущие станки и инструменты», кандидат технических наук, доцент</p><p>344003, г. Ростов-на-Дону, пл. Гагарина, 1</p></bio><bio xml:lang="en"><p>Мuharbiy М. Aliev</p><p>Rostov-on-Don</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Донской государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Don State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>30</day><month>03</month><year>2022</year></pub-date><volume>22</volume><issue>1</issue><fpage>50</fpage><lpage>56</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Fominov E.V., Shuchev C.G., Aliev M.M., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Фоминов Е.В., Шучев К.Г., Алиев М.М.</copyright-holder><copyright-holder xml:lang="en">Fominov E.V., Shuchev C.G., Aliev M.M.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.vestnik-donstu.ru/jour/article/view/1834">https://www.vestnik-donstu.ru/jour/article/view/1834</self-uri><abstract><sec><title>Introduction</title><p>Introduction. This paper discusses tribomechanical characteristics of experimental hard alloys with a modified cobalt binder under friction without lubrication on hard-to-cut materials – stainless steel and titanium alloy. The research objective is to evaluate the process of friction interaction for each friction pair according to a number of parameters, and to determine the optimal combinations of “experimental hard alloy – structural material” on the basis of the established tribological indicators.</p></sec><sec><title>Materials and Methods</title><p>Materials and Methods. Tribological tests of hard alloys were carried out using a cylinder-to-disc friction scheme for different sliding speeds and temperatures under constant load without the use of lubricants. Comparison of the friction interaction process was carried out by the frictional force, volumetric wear and roughness of the friction tracks on the counterbody. Stainless steel 12H18N9Т and titanium alloy ВТ3-1 were used as counterbody materials. The resistance of experimental compositions to the abrasive type of wear was determined through measuring the surface dynamic microhardness on a scanning nanohardness tester by analyzing the thickness of the scratches caused by the indenter.</p></sec><sec><title>Results</title><p>Results. According to the results of surface microindentation, the experimental alloys 2.22 (binder 5.65% Co + l.8% Mo + 0.6% Ti) and 2.23 (binder 5.1% Co + 2.7% Mo + 0.61 % Ti) are characterized by the highest microhardness. For these materials, the average scratch width at various forces was minimal. During tribological tests, the best frictional characteristics were recorded for stainless steel in combination with experimental alloy 2.22, and for the friction pair “titanium alloy VT3-1 — hard alloy 2.23”. The friction of this combination of materials was characterized by low friction coefficients with a low level of fluctuations, minimal wear of samples, and changes in the initial microrelief of their surfaces.</p><p>Discussion and Conclusions. As a result of the research, the optimal friction pairs from the point of view of tribological interaction were established, specifically “titanium alloy VT3-1 — hard alloy 2.23” and “stainless steel 12X18N9T – hard alloy 2.22”. The frictional interaction for these combinations of materials is characterized by minimal volumetric wear, which will contribute to increasing the wear resistance of the tool in the areas of elastic contact on the front and rear surfaces.</p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Введение</title><p>Введение. Работа посвящена исследованию триботехнических характеристик экспериментальных твёрдых сплавов с модифицированной связкой при трении без смазки по труднообрабатываемым в процессе резания материалам — нержавеющей стали и титановому сплаву. Целью исследований является оценка процесса фрикционного взаимодействия для каждой пары трения по ряду параметров и определение на основании установленных трибопоказателей оптимальных сочетаний «экспериментальный твёрдый сплав – конструкционный материал».</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Трибологические испытания твёрдых сплавов проводились по схеме трения «цилиндр-диск» для различных скоростей скольжения и температур при постоянной нагрузке без применения смазочного материала. Сравнение процесса фрикционного взаимодействия производилось по силе трения, объёмному износу и шероховатости дорожек трения на контртеле. В качестве материалов контртел применялись нержавеющая сталь 12Х18Н9Т и титановый сплав ВТ3-1. Определение устойчивости экспериментальных составов к абразивному виду изнашивания осуществлялось путём измерения поверхностной микротвердости на сканирующем нанотвердомере путём анализа толщины нанесенных индентором царапин.</p></sec><sec><title>Результаты исследования</title><p>Результаты исследования. По результатам микроидентирования наибольшей микротвердостью характеризуется экспериментальные сплавы 2.22 (связка 5,65%Со+l,8%Mo+0,6%Ti) и 2.23 (связка 5,1%Со+2,7%Mo+0,61%Ti). Для этих материалов средняя ширина царапины при различных усилиях была минимальна. В ходе трибологических испытаний наилучшие характеристики были зафиксированы для нержавеющей стали в сочетании со сплавом 2.22 и для пары трения «титановый сплав ВТ3-1 — твёрдый сплав 2.23». Процесс трения для этого сочетания материалов характеризуется невысокими коэффициентами трения с низким уровнем флуктуаций, минимальным износом образцов и изменениями начального микрорельефа их поверхностей.</p></sec><sec><title>Обсуждение и заключения</title><p>Обсуждение и заключения. В результате исследований установлены оптимальные с точки зрения трибологического взаимодействия пары трения: «титановый сплав ВТ3-1 — твёрдый сплав 2.23» и «нержавеющая сталь 12Х18Н9Т — твёрдый сплав 2.22». Процесс фрикционного взаимодействия для данных сочетаний материалов характеризуется минимальным объёмным износом, что будет способствовать повышению износостойкости инструмента на участках упругого контакта на передней и задней поверхностях.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>твёрдые сплавы</kwd><kwd>износостойкость</kwd><kwd>нержавеющая сталь</kwd><kwd>титановый сплав</kwd></kwd-group><kwd-group xml:lang="en"><kwd>hard alloys</kwd><kwd>wear resistance</kwd><kwd>stainless steel</kwd><kwd>titanium alloy</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Cemented carbide microstructures: A review / J. García, V. C. Ciprés, A. Blomqvist, B. 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