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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">vestift</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-технических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physical-technical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8358</issn><issn pub-type="epub">2524-244X</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8358-2023-68-2-103-112</article-id><article-id custom-type="elpub" pub-id-type="custom">vestift-795</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, МЕТАЛЛУРГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIALS SCIENCES AND ENGINEERING, METALLURGY</subject></subj-group></article-categories><title-group><article-title>Влияние режимов лазерной закалки на свойства стали 40Х13</article-title><trans-title-group xml:lang="en"><trans-title>Influence of laser hardening modes on the properties of 40X13 steel</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>Мищирук</surname><given-names>О. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Mishchiruk</surname><given-names>O. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мищирук Ольга Михайловна – старший преподаватель кафедры начертательной геометриии инженерной графики</p><p>ул. Московская, 267, 224017, Брест, Республика Беларусь</p></bio><bio xml:lang="en"><p>Olga M. Mishchiruk – Senior Lecturer, Department of Descriptive Geometry and Engineering Graphics</p><p>267, Moskovskaya Str., 224017, Brest, Republic of Belarus</p></bio><email xlink:type="simple">purtyupolia@gmail.com</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>Веремейчик</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Verameichyk</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Веремейчик Андрей Иванович – кандидат физико-математических наук, доцент, старший научный сотрудник научно-исследовательской части</p><p>ул. Московская, 267, 224017, Брест, Республика Беларусь</p></bio><bio xml:lang="en"><p>Andrei I. Verameichyk – Cand. Sci. (Physics and Mathematics), Associate Professor, Senior Researcher of the Research Unit</p><p>267, Moskovskaya Str., 224017, Brest, Republic of Belarus</p></bio><email xlink:type="simple">vai_mrtm@bstu.by</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>Девойно</surname><given-names>О. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Devoino</surname><given-names>O. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Девойно Олег Георгиевич – доктор технических наук, профессор, заведующий научно-исследовательской лабораторией плазменных и лазерных технологий</p><p>пр. Независимости, 65, 220013, Минск, Республика Беларусь</p></bio><bio xml:lang="en"><p>Oleg G. Devoino – Dr. Sci. (Engineering), Professor, Head of Plasma and Laser Technologies Research Laboratory</p><p>65, Nezavisimosti Ave., 220013, Minsk, Republic of Belarus</p></bio><email xlink:type="simple">scvdmed@bntu.by</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нерода</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Neroda</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нерода Михаил Владимирович – кандидат технических наук, доцент, первый проректор</p><p>ул. Московская, 267, 224017, Брест, Республика Беларусь</p></bio><bio xml:lang="en"><p>Mikhail V. Neroda – Cand. Sci. (Engineering), Associate Professor, First Vice-Rector</p><p>267, Moskovskaya Str., 224017, Brest, Republic of Belarus</p></bio><email xlink:type="simple">nerodaMV@mail.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>Холодарь</surname><given-names>Б. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kholodar</surname><given-names>B. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Холодарь Борис Григорьевич – кандидат технических наук, доцент, старший научный сотрудник научно-исследовательской части</p><p>ул. Московская, 267, 224017, Брест, Республика Беларусь</p></bio><bio xml:lang="en"><p>Boris G. Kholodar – Cand. Sci. (Engineering), Senior, Associate Professor, Senior Researcher of the Research Unit</p><p>267, Moskovskaya Str., 224017, Brest, Republic of Belarus</p></bio><email xlink:type="simple">hbg@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Брестский государственный технический университет</institution></aff><aff xml:lang="en"><institution>Brest State Technical University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский национальный технический университет</institution></aff><aff xml:lang="en"><institution>Belarusian National Technical University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>09</day><month>07</month><year>2023</year></pub-date><volume>68</volume><issue>2</issue><fpage>103</fpage><lpage>112</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мищирук О.М., Веремейчик А.И., Девойно О.Г., Нерода М.В., Холодарь Б.Г., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Мищирук О.М., Веремейчик А.И., Девойно О.Г., Нерода М.В., Холодарь Б.Г.</copyright-holder><copyright-holder xml:lang="en">Mishchiruk O.M., Verameichyk A.I., Devoino O.G., Neroda M.V., Kholodar B.G.</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://vestift.belnauka.by/jour/article/view/795">https://vestift.belnauka.by/jour/article/view/795</self-uri><abstract><p>Проведено исследование зависимости характеристик прочности и пластичности, а также микротвердости образцов из коррозионно-стойкой стали 40Х13 от режимов лазерной поверхностной закалки волоконным лазером. В зависимости от размеров пятна сканирования и скорости сканирования на противоположных плоскостях образца с габаритными размерами 20 × 200 мм наносились 3–5 дорожек. Проведены испытания образцов на статическое разрушение и исследования микротвердости материала образцов по глубине измененной структуры. Установлено, что разрушение обработанных образцов во всех случаях имело хрупкий характер с невысоким уровнем разрушающих деформаций при напряжениях ниже предела прочности исходного материала. Построенные диаграммы растяжения указывают на незначительное влияние лазерной обработки на величину модуля упругости материала. Исследования твердости материала закаленной лазером дорожки и микротвердости материала по глубине зоны измененной структуры показало их увеличение до 3–4 раз в сравнении с исходными характеристиками. Полученные результаты могут служить базой для исследования взаимосвязи между режимами нагрева лазерным лучом и свойствами материала упрочненной зоны.</p></abstract><trans-abstract xml:lang="en"><p>We have studied the dependence of the characteristics, strength and plasticity, as well as the microhardness of specimens made of corrosion-resistant steel 40X13 on the modes of laser surface hardening by a fiber laser. Depending on the size of the scanning spot and the scanning speed, 3–5 tracks were applied on opposite planes of the sample with overall dimensions of 20 × 200 mm. Samples were tested for static fracture and the microhardness of the material of the samples was studied in terms of the depth of the changed structure. It was found that the fracture of the treated samples in all cases was of a brittle nature with a low level of destructive deformations at stresses below the tensile strength of the original material. The plotted tension diagrams indicate an insignificant effect of laser processing on the value of the elastic modulus of the material. Studies of the hardness of the material of the laser-hardened track and the microhardness of the material along the depth of the zone of the changed structure showed their increase up to 3–4 times compared with the initial characteristics. The results obtained can serve as a basis for studying the relationship between the modes of heating by a laser beam and the properties of the material of the hardened zone.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>лазерная поверхностная закалка</kwd><kwd>микроструктура</kwd><kwd>характеристики пластичности</kwd><kwd>микротвердость</kwd><kwd>прочностные характеристики</kwd><kwd>легированная сталь 40Х13</kwd></kwd-group><kwd-group xml:lang="en"><kwd>laser surface hardening</kwd><kwd>fiber laser</kwd><kwd>plasticity characteristics</kwd><kwd>microhardness</kwd><kwd>strength characteristics</kwd><kwd>alloy steel 40X13</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">Denesh Babu, P. Laser surface hardening: A review / P. Denesh Babu, K. R. Balasubramanian, G. Buvanashekaran // Int. J. Sci. 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