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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">10.26896/1028-6861-2025-91-2-28-34</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-2392</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>ИССЛЕДОВАНИЕ СТРУКТУРЫ И СВОЙСТВ. ФИЗИЧЕСКИЕ МЕТОДЫ ИССЛЕДОВАНИЯ И КОНТРОЛЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TESTING OF STRUCTURE AND PARAMETERS. PHYSICAL METHODS OF TESTING AND QUALITY CONTROL</subject></subj-group></article-categories><title-group><article-title>Исследование HC – HV-свойств сплавов WC-Co с различной микроструктурой</article-title><trans-title-group xml:lang="en"><trans-title>Study HC – HV properties of WC-Co alloys with different microstructures</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. С.-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>Голуб</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Golub</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Валерьевич Голуб</p><p>194156, г. С.-Петербург, просп. Энгельса, д. 27</p></bio><bio xml:lang="en"><p>Aleksandr V. Golub</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>Рыбин</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Rybin</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дмитрий Сергеевич Рыбин</p><p>194156, г. С.-Петербург, просп. Энгельса, д. 27</p></bio><bio xml:lang="en"><p>Dmitriy S. Rybin</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>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. С.-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-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><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>20</day><month>02</month><year>2025</year></pub-date><volume>91</volume><issue>2</issue><fpage>28</fpage><lpage>34</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Васильева М.В., Голуб А.В., Рыбин Д.С., Песин В.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Васильева М.В., Голуб А.В., Рыбин Д.С., Песин В.А.</copyright-holder><copyright-holder xml:lang="en">Vasilyeva M.V., Golub A.V., Rybin D.S., Pesin V.A.</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/2392">https://www.zldm.ru/jour/article/view/2392</self-uri><abstract><p>При производстве инструментальных твердых сплавов WC-Co экспресс-контроль качества изделий осуществляют с помощью измерения магнитных характеристик материала. При этом величину коэрцитивной силы (HC) часто используют для оценки размера зерна WC и твердости сплава (HV), однако не учитывается характер распределения зерен WC по размерам. В работе представлены результаты исследования HC – HV-свойств сплавов WC-Co c различной микроструктурой. Анализировали образцы серийных сплавов WC — 10 % масс. Co. Показано, что коэрцитивная сила не зависит от ширины распределения зерен WC и определяется величиной среднего размера d1,0. Твердость HV30, зависящая от ширины распределения зерен WC, определяется величиной d3,2. На основании полученных зависимостей построена карта свойств HC – HV с учетом ширины распределения зерен WC по размерам. Установлено, что данные только по коэрцитивной силе не позволяют получить надежную оценку твердости (отклонение может составлять 100 – 120 HV). Вместе с тем совместное определение коэрцитивной силы и твердости дает возможность оценить ширину распределения зерен WC в сплаве. Анализ опытных, спеченных при относительно низкой температуре образцов сплавов с содержанием углерода вблизи нижней границы углеродного окна выявил формирование структуры с равномерно распределенными крупными включениями Co. В такой структуре распределение включений Co по размерам носит бимодальный характер, средний размер включений не пропорционален среднему размеру зерен WC. Кроме того, образование подобной структуры не влияет на твердость сплава, но приводит к значительному уменьшению коэрцитивной силы. Полученные результаты могут быть использованы при контроле свойств твердых сплавов WC-Co и интерпретации экспериментальных данных.</p></abstract><trans-abstract xml:lang="en"><p>Measurement of magnetic parameters is a method for express product quality control in processing of WC-Co tool hardmetals. The coercivity value is often used to estimate the WC grain size and the hardness of the hardmetal, whereas the nature of the WC grain size distribution is often disregarded. HC – HV properties of WC-Co hardmetals with different microstructures were studied. For production samples of WC – 10 % Co hardmetals, it is shown that HC does not depend on the width of the WC grain distribution and is a function of the average size d1.0. The hardness HV30, which is affected by the width of the WC grain distribution, is a function of the d3.2 value. Based on the obtained relations, a HC – HV property map is plotted, taking into account the width of the WC grain size distribution. The map shows that measuring only the coercivity value will introduce uncertainty in the estimated hardness in the 100 – 120 HV range. However, joint measurement of HC and HV makes it possible to estimate the width of the WC grain size distribution in the hardmetal. Based on the analysis of experimental hardmetal samples with a carbon content near the lower boundary of the carbon window and sintered at a relatively low temperature, the formation of an unusual structure was observed featuring the uniformly distributed large cobalt lakes. In such a structure, the size distribution of Co lakes is bimodal and the average size of the lakes is not proportional to the average size of WC grains. Moreover the formation of such a structure does not affect the hardness of the hardmetal, but leads to a significant decrease in the coercivity. The results obtained can be used for industrial inspection of the WC-Co hardmetals properties, as well as in the interpretation of experimental data.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>твердый сплав WC-Co</kwd><kwd>твердость</kwd><kwd>коэрцитивная сила</kwd><kwd>ширина распределения зерен по размерам</kwd><kwd>карта свойств HC – HV</kwd></kwd-group><kwd-group xml:lang="en"><kwd>WC-Co hardmetal</kwd><kwd>hardness</kwd><kwd>coercivity</kwd><kwd>grain size distribution width</kwd><kwd>HC – HV property maps</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">Brueckl H., Breth L., Fischbacher J., et al. Machine learning based prediction of mechanical properties of WC-Co cemented carbides from magnetic data only / J. Refract. Met. Hard Mater. 2024. Vol. 121. P. 106665. 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