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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">blackmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Черная Металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-0797</issn><issn pub-type="epub">2410-2091</issn><publisher><publisher-name>National University of Science and Technology "MISIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0368-0797-2026-3-242-249</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-3083</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>МАТЕРИАЛОВЕДЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIAL SCIENCE</subject></subj-group></article-categories><title-group><article-title>Влияние дефектов, возникающих в процессе WAAM, на усталостную прочность сталей 08ХМФА и 30ХГСА</article-title><trans-title-group xml:lang="en"><trans-title>Effect of the defects occurring during WAAM process on fatigue strength of 08CrMoV and 30CrMnSi steels</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4300-6659</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кабалдин</surname><given-names>Ю. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kabaldin</surname><given-names>Yu. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юрий Георгиевич Кабалдин, д.т.н., профессор кафедры «Технология и оборудование машиностроения»</p><p>Россия, 603022, Нижний Новгород, ул. Минина, 24</p></bio><bio xml:lang="en"><p>Yurii G. Kabaldin, Dr. Sci. (Eng.), Prof. of the Chair “Technology and Engineering Equipment”</p><p>24 Minina Str., Nizhny Novgorod 603022, Russian Federation</p></bio><email xlink:type="simple">uru.40@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/0000-0001-8150-9332</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аносов</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Anosov</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Максим Сергеевич Аносов, к.т.н., доцент кафедры «Технология и оборудование машиностроения»</p><p>Россия, 603022, Нижний Новгород, ул. Минина, 24</p></bio><bio xml:lang="en"><p>Maksim S. Anosov, Cand. Sci. (Eng.), Assist. Prof. of the Chair “Techno­logy and Engineering Equipment”</p><p>24 Minina Str., Nizhny Novgorod 603022, Russian Federation</p></bio><email xlink:type="simple">anosov-maksim@list.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/0009-0003-2640-9779</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мордовина</surname><given-names>Ю. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Mordovina</surname><given-names>Yu. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юлия Сергеевна Мордовина, инженер института переподготовки специалистов, ассистент кафедры «Технология и оборудование машиностроения», аспирант</p><p>Россия, 603022, Нижний Новгород, ул. Минина, 24</p></bio><bio xml:lang="en"><p>Yuliya S. Mordovina, Engineer of the Institute of Retraining of Specia­lists, Assistant of the Chair “Technology and Engineering Equipment”, Postgraduate</p><p>24 Minina Str., Nizhny Novgorod 603022, Russian Federation</p></bio><email xlink:type="simple">ips4@nntu.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/0009-0005-6494-2851</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чернигин</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernigin</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Алексеевич Чернигин, инженер кафедры «Технология и оборудование машиностроения», аспирант</p><p>Россия, 603022, Нижний Новгород, ул. Минина, 24</p></bio><bio xml:lang="en"><p>Mikhail A. Chernigin, Engineer of the Chair “Technology and Engineering Equipment “, Postgraduate</p><p>24 Minina Str., Nizhny Novgorod 603022, Russian Federation</p></bio><email xlink:type="simple">honeybadger52@yandex.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/0000-0002-1403-1751</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мансуров</surname><given-names>Р. Ш.</given-names></name><name name-style="western" xml:lang="en"><surname>Mansurov</surname><given-names>R. Sh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ренат Шарифович Мансуров, к.т.н., доцент кафедры «Технология и оборудование машиностроения»</p><p>Россия, 603022, Нижний Новгород, ул. Минина, 24</p></bio><bio xml:lang="en"><p>Renat Sh. Mansurov, Cand. Sci. (Eng.), Assist. Prof. of the Chair “Technology and Engineering Equipment”</p><p>24 Minina Str., Nizhny Novgorod 603022, Russian Federation</p></bio><email xlink:type="simple">renat-m1@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Нижегородский государственный технический университет им. Р. Е. Алексеева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>R.E. Alekseev Nizhny Novgorod State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>02</day><month>07</month><year>2026</year></pub-date><volume>69</volume><issue>3</issue><fpage>242</fpage><lpage>249</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кабалдин Ю.Г., Аносов М.С., Мордовина Ю.С., Чернигин М.А., Мансуров Р.Ш., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Кабалдин Ю.Г., Аносов М.С., Мордовина Ю.С., Чернигин М.А., Мансуров Р.Ш.</copyright-holder><copyright-holder xml:lang="en">Kabaldin Y.G., Anosov M.S., Mordovina Y.S., Chernigin M.A., Mansurov R.S.</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://fermet.misis.ru/jour/article/view/3083">https://fermet.misis.ru/jour/article/view/3083</self-uri><abstract><p>На данный момент вопросы, касающиеся усталостного разрушения изделий, полученных с использованием аддитивных методов, в литературе встречаются достаточно редко. Особенно, если усталостное разрушение происходит в присутствии дефектов различного рода. Актуальность обусловлена риском преждевременного разрушения деталей под циклическими нагрузками, особенно в ответственных конструкциях (авиация, энергетика), где метод электродуговой наплавки (WAAM) может обеспечить экономию времени изготовления на 40 – 60 %. В данном исследовании оценивается влияние технологических дефектов на усталостную прочность сталей 08ХМФА и 30ХГСА, полученных методом WAAM. В процессе наплавки были изготовлены образцы из сталей 08ХМФА и 30ХГСА. Режимы наплавки варьировались для генерации различных дефектов: макродефекты (поры, непровары, поверхностные концентраторы), микроструктурные дефекты (видманштеттенова структура, разнозернистость и т. д.). Также были изготовлены бездефектные образцы. Для выявления микроструктуры металлов, а также распределения и характера возможных дефектов был проведен металлографический анализ. Травление образцов осуществлялось в 4 %-ном водном растворе HNO3 . Усталостные испытания проводились на специализированном стенде с нагружением образцов по схеме консольного изгиба. Наибольшую усталостную прочность показывают бездефектные образцы обеих сталей. Наличие любого рода дефектов (микроструктурных и макроструктурных) приводит к снижению усталостной прочности. Макроструктурные дефекты (крупные поры и непровары) оказывают более сильное влияние на усталостную прочность материала, чем микроструктурные дефекты материала. Также установлено, что наличие поверхностного концентратора оказывает большее влияние на формирование магистральной усталостной трещины, чем крупные несплавления в центральной области образцов.</p></abstract><trans-abstract xml:lang="en"><p>At the moment, there are very few studies on fatigue failure of the products obtained by additive manufacturing, especially when fatigue failure occurs due to various types of defects. The importance of this topic is due to the potential for premature components damage under cyclic loading, especially in critical applications such as aviation and energy, where WAAM (wire arc additive manufacturing) can save significant manufacturing time by up to 40 – 60 %. The study evaluates the impact of technological defects on the fatigue strength of 08CrMoV and 30CrMnSi steels produced by WAAM. The authors used different surfacing modes to generate various types of defects, including macrodefects such as pores, lack of fusion, and surface concentrators, as well as microstructural defects like Widmannstetten structures and grain diversity. Defect-free samples were also produced. The authors performed metallographic analysis to investigate the metals microstructure, distribution and nature of any possible defects. Samples were etched using a 4 % aqueous HNO3 solution. Fatigue tests were conducted on a specialized machine with sample loading following the cantilever bending method. Defect-free samples of both steels exhibited the highest fatigue strength. The presence of any type of defect, whether microstructural or macrostructural, resulted in a decrease in fatigue strength. Macrostructural defects, such as large pores and lack of fusion, had a stronger impact on the material fatigue strength compared to microstructural defects. Additionally, it was found that the presence of a surface concentrator had a greater influence on initiation of a primary fatigue crack than the presence of large non-melted regions in the sample central part.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>усталостная прочность</kwd><kwd>WAAM</kwd><kwd>30ХГСА</kwd><kwd>08ХМФА</kwd><kwd>дефекты металла</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fatigue strength</kwd><kwd>WAAM</kwd><kwd>30CrMnSi</kwd><kwd>08CrMoV</kwd><kwd>metal defects</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 25-19-00534.</funding-statement><funding-statement xml:lang="en">The work was supported the Russian Science Foundation, grant No. 25-19-00534.</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">Tang W., Tang Z., Lu W., Wang S., Ming Y. 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