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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="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">zldm</journal-id><journal-title-group><journal-title xml:lang="ru">Заводская лаборатория. Диагностика материалов</journal-title><trans-title-group xml:lang="en"><trans-title>Industrial laboratory. Diagnostics of materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1028-6861</issn><issn pub-type="epub">2588-0187</issn><publisher><publisher-name>ООО «Издательство «ТЕСТ-ЗЛ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26896/1028-6861-2023-89-2-I-45-49</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-1859</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="ru"><subject>ФИЗИЧЕСКИЕ МЕТОДЫ ИССЛЕДОВАНИЯ И КОНТРОЛЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICAL METHODS OF RESEARCH AND MONITORING</subject></subj-group></article-categories><title-group><article-title>Исследование зависимости твердости сплавов WC - Со от характера распределения зерен WC по размерам</article-title><trans-title-group xml:lang="en"><trans-title>Dependence of the hardness of WC - Co alloys on the character of the distribution of WC grains in size</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Васильева</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vasilyeva</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мария Владимировна Васильева</p><p>194156, г. Санкт-Петербург, просп. Энгельса, д. 27</p></bio><bio xml:lang="en"><p>Maria V. Vasilyeva</p><p>27, prosp. Engelsa, St. Petersburg, 194156</p></bio><email xlink:type="simple">VasilyevaMV@virial.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Песин</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pesin</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вадим Абрамович Песин</p><p>194156, г. Санкт-Петербург, просп. Энгельса, д. 27</p></bio><bio xml:lang="en"><p>Vadim A. Pesin</p><p>27, prosp. Engelsa, St. Petersburg, 194156</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Осмаков</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Osmakov</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Сергеевич Осмаков</p><p>194156, г. Санкт-Петербург, просп. Энгельса, д. 27</p></bio><bio xml:lang="en"><p>Andrey S. Osmakov</p><p>27, prosp. Engelsa, St. Petersburg, 194156</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шамшурин</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Shamshurin</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Игоревич Шамшурин</p><p>195251, г. Санкт-Петербург, ул. Политехническая, д. 29</p></bio><bio xml:lang="en"><p>Alexey I. Shamshurin</p><p>29, Polytechnicheskaya ul., St. Petersburg, 195251</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ООО «Вириал»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Virial Ltd.</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>СПбПУ имени Петра Великого</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Peter the Great St. Petersburg Polytechnic University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>23</day><month>02</month><year>2023</year></pub-date><volume>89</volume><issue>2(I)</issue><fpage>45</fpage><lpage>49</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Васильева М.В., Песин В.А., Осмаков А.С., Шамшурин А.И., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Васильева М.В., Песин В.А., Осмаков А.С., Шамшурин А.И.</copyright-holder><copyright-holder xml:lang="en">Vasilyeva M.V., Pesin V.A., Osmakov A.S., Shamshurin A.I.</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.zldm.ru/jour/article/view/1859">https://www.zldm.ru/jour/article/view/1859</self-uri><abstract><p>В работе представлены результаты исследования зависимости твердости сплава WC - Со с 10 % масс. Со от характера распределения зерен WC по размерам. За размер зерна карбидной фазы был выбран эквивалентный диаметр окружности с площадью, эквивалентной площади сечения зерна. Усреднение размеров зерен WC проводили по их числу, площади и объему. Установлено, что для сплавов с узкими распределениями зерен WC по размерам зависимость твердости сплавов от среднего размера зерна имеет вид соотношения Холла - Петча. В случае широкого распределения наблюдается отклонение от этой зависимости. Показано, что использование усредненного по площади размера зерен WC позволяет описывать зависимость твердости от размера зерна единым уравнением Холла - Петча независимо от характера распределения зерен по размерам. При этом средний разброс значений твердости от линии тренда не превышает 12 HV. Использование усредненного по объему размера зерна для описания зависимости твердости на практике дает большой разброс от линии регрессии, который связан с погрешностью в определении содержания крупных и очень крупных зерен и требует значительного увеличения количества измеренных зерен по сравнению с усреднением по площади. Полученные результаты могут быть использованы при анализе одно- и двухфазных материалов с различными по ширине распределениями зерен по размерам.</p></abstract><trans-abstract xml:lang="en"><p>The paper presents the results of studying the dependence of the hardness of WC - Co alloy with a Co content of 10 wt.% on the character of the size distribution of WC grains. An equivalent diameter of the circle with an area matching the cross-section area of the grain was chosen as a grain size of the carbide phase. The WC grain sizes were averaged over their number, area and volume. It is shown that for the alloys with a narrow WC grain size distribution the hardness of the alloys as function of the average grain size follows the Hall - Petch relation. As for a wide distribution, a deviation from this function is observed. It is shown that the use of the area-averaged WC grain size enables description of the hardness as a function of the grain size via a unified Hall - Petch equation, regardless of the nature of the grain size distribution. In this case, the average scatter of hardness values around the trend line does not exceed 12 HV. The use of the volume-averaged grain size in description of the hardness dependence results in practice in a large scatter from the regression line, which is attributed to the error in determination of the content of coarse and very coarse grains, when one needs to measure significantly larger number of grains, as compared to averaging over the area. The results obtained may be used in analysis of single-phase and two-phase materials with grain size distributions with a varying width.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>твердый сплав WC - Со</kwd><kwd>твердость</kwd><kwd>микроструктура</kwd><kwd>распределение зерен по размерам</kwd><kwd>средний размер зерна</kwd></kwd-group><kwd-group xml:lang="en"><kwd>WC - Co hardmetal</kwd><kwd>hardness</kwd><kwd>microstructure</kwd><kwd>grain size distribution</kwd><kwd>average grain size</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы благодарят главного технолога по инструментальным твердым сплавам ООО ≪Вириал≫ Д. В. Федорова за предоставленные образцы.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Vornberger A., Picker Т., Potschke J., et al. 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