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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">10.26896/1028-6861-2025-91-12-94-100</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-2677</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>МЕХАНИКА МАТЕРИАЛОВ: ПРОЧНОСТЬ, РЕСУРС, БЕЗОПАСНОСТЬ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MECHANICAL TESTING METHODS</subject></subj-group></article-categories><title-group><article-title>Экспресс-контроль механических свойств алюминиевых сплавов инструментальным индентированием</article-title><trans-title-group xml:lang="en"><trans-title>Express control of aluminum alloys mechanical properties by instrumented indentation</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>Матюнин</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Matyunin</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вячеслав Михайлович Матюнин</p><p>111250, Москва, Красноказарменная ул., д. 14</p></bio><bio xml:lang="en"><p>Vyacheslav M. Matyunin</p><p>14, Krasnokazarmennaya ul., Moscow, 111250</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>Марченков</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Marchenkov</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Артём Юрьевич Марченков</p><p>111250, Москва, Красноказарменная ул., д. 14</p></bio><bio xml:lang="en"><p>Artem Yu. Marchenkov</p><p>14, Krasnokazarmennaya ul., Moscow, 111250</p></bio><email xlink:type="simple">art-marchenkov@yandex.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>Агафонов</surname><given-names>Р. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Agafonov</surname><given-names>R. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Роман Юрьевич Агафонов</p><p>111250, Москва, Красноказарменная ул., д. 14</p><p>111250, Москва, Авиамоторная ул., д. 53</p></bio><bio xml:lang="en"><p>Roman Yu. Agafonov</p><p>14, Krasnokazarmennaya ul., Moscow, 111250</p><p>53, Aviamotornaya ul., Moscow, 111250</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Цветкова</surname><given-names>Н. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsvetkova</surname><given-names>N. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Наталья Олеговна Цветкова</p><p>111250, Москва, Красноказарменная ул., д. 14</p><p>111250, Москва, Авиамоторная ул., д. 53</p></bio><bio xml:lang="en"><p>Natalia O. Tsvetkova</p><p>14, Krasnokazarmennaya ul., Moscow, 111250</p><p>53, Aviamotornaya ul., Moscow, 111250</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петрова</surname><given-names>М. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrova</surname><given-names>M. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мария Павловна Петрова</p><p>111250, Москва, Красноказарменная ул., д. 14</p><p>105005, Москва, 2-я Бауманская ул., д. 5, стр. 1</p></bio><bio xml:lang="en"><p>Marya P. Petrova</p><p>14, Krasnokazarmennaya ul., Moscow, 111250</p><p>5, 2-ya Baumanskaya ul., Moscow, 105005</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Свиридов</surname><given-names>Г. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Sviridov</surname><given-names>G. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Георгий Борисович Свиридов</p><p>111250, Москва, Красноказарменная ул., д. 14</p></bio><bio xml:lang="en"><p>Georgy B. Sviridov</p><p>14, Krasnokazarmennaya ul., Moscow, 111250</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский университет «МЭИ»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research University «Moscow Power Engineering Institute»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный исследовательский университет «МЭИ»; АО «Российские космические системы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research University «Moscow Power Engineering Institute»; JSC «Russian Space Systems»,</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Национальный исследовательский университет «МЭИ»; АО «Российские космические системы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research University «Moscow Power Engineering Institute»; JSC «Russian Space Systems»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Национальный исследовательский университет «МЭИ»; Московский государственный технический университет им. Н. Э. Баумана</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research University «Moscow Power Engineering Institute»; Bauman Moscow State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>24</day><month>12</month><year>2025</year></pub-date><volume>91</volume><issue>12</issue><fpage>94</fpage><lpage>100</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Матюнин В.М., Марченков А.Ю., Агафонов Р.Ю., Цветкова Н.О., Петрова М.П., Свиридов Г.Б., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Матюнин В.М., Марченков А.Ю., Агафонов Р.Ю., Цветкова Н.О., Петрова М.П., Свиридов Г.Б.</copyright-holder><copyright-holder xml:lang="en">Matyunin V.M., Marchenkov A.Y., Agafonov R.Y., Tsvetkova N.O., Petrova M.P., Sviridov G.B.</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/2677">https://www.zldm.ru/jour/article/view/2677</self-uri><abstract><p>Разработана методика определения механических свойств алюминиевых сплавов инструментальным индентированием шаровым индентором. В основе методики лежит установленная связь максимальной равномерной деформации при растяжении образца с параметром деформационного упрочнения в пластической области индентирования. Это дало возможность получить формулу для расчета отношения предела текучести к временному сопротивлению с использованием параметра деформационного упрочнения. Определены значения степени нагружения индентора, необходимые для достижения максимальной невосстановленной твердости по Бринеллю, которая прямо пропорциональна временному сопротивлению с постоянным коэффициентом пересчета для испытанных алюминиевых сплавов. Располагая временным сопротивлением и отношением предела текучести к временному сопротивлению, можно рассчитать предел текучести сплава, который по другим известным методикам индентирования определяется сравнительно сложно. Учитывая однозначную связь отношения предела текучести к временному сопротивлению с параметром деформационного упрочнения, последний предложено использовать в качестве диагностического параметра при оценке степени хрупкости конструкционных материалов — чем выше этот параметр, тем материал более склонен к хрупкому разрушению. Предложенная методика определения механических свойств инструментальным индентированием проста в исполнении и может быть легко автоматизирована, что повышает производительность контроля механических свойств алюминиевых сплавов.</p></abstract><trans-abstract xml:lang="en"><p>A technique for determining the mechanical properties of aluminum alloys by instrumented indentation with a ball indenter was developed. The technique is based on the correlation between the maximum equal strain during specimen tension and the indentation strain hardening parameter in the plastic region. This made it possible to obtain a formula for calculating the ratio of yield strength to ultimate strength using the strain hardening parameter. The values of the loading ratio necessary to achieve the maximum Brinell hardness, which is proportional to the ultimate tensile strength with a constant conversion factor for the tested aluminum alloys, were established. The ultimate tensile strength value and the ratio of yield strength to ultimate tensile strength allow calculating the yield strength of the alloy, which is usually determined quite difficult by indentation according to other known methods. Given the unambiguous correlation between the ratio of yield strength to ultimate tensile strength and the strain hardening parameter, it is proposed to use it as a diagnostic parameter in the estimation the degree of fragility of structural materials. The higher this parameter, the more prone the material is to brittle fracture. The proposed method for determining mechanical properties by instrumented indentation is quite simple and easily responds to automation, which increases the productivity of monitoring the mechanical properties of aluminum alloys.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>алюминиевые сплавы</kwd><kwd>механические свойства</kwd><kwd>инструментальное индентирование</kwd><kwd>эффект Портевена – Ле Шателье</kwd></kwd-group><kwd-group xml:lang="en"><kwd>aluminum alloys</kwd><kwd>mechanical properties</kwd><kwd>instrumented indentation</kwd><kwd>Portevin – Le Chatelier effect</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках проекта «Разработка методики определения трещиностойкости хрупких материалов и покрытий методом инструментального индентирования» (договор No ПНИ-24/26-37) при поддержке гранта НИУ «МЭИ» на реализацию программы научных исследований «Приоритет 2030: Технологии будущего» в 2024 – 2026 гг.</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">Oreshko E., Yerasov V., Yakovlev N., Utkin D. 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