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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Obrabotka Metallov / Metal Working and Material Science</journal-id><journal-title-group><journal-title xml:lang="en">Obrabotka Metallov / Metal Working and Material Science</journal-title><trans-title-group xml:lang="ru"><trans-title>Обработка металлов (технология • оборудование • инструменты)</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1994-6309</issn><issn publication-format="electronic">2541-819X</issn><publisher><publisher-name xml:lang="en">Новосибирский государственный технический университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">308838</article-id><article-id pub-id-type="doi">10.17212/1994-6309-2025-27.3-6-22</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Determination of the main parameters of resistance spot welding of Al-5 Mg aluminum alloy</article-title><trans-title-group xml:lang="ru"><trans-title>Определение основных параметров контактной точечной сварки алюминиевого сплава АМг-5</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7437-2291</contrib-id><contrib-id contrib-id-type="scopus">56509486000</contrib-id><contrib-id contrib-id-type="researcherid">A-9010-2013</contrib-id><contrib-id contrib-id-type="spin">6927-7394</contrib-id><name-alternatives><name xml:lang="en"><surname>Kondratiev</surname><given-names>Viktor V.</given-names></name><name xml:lang="ru"><surname>Кондратьев</surname><given-names>Виктор Викторович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Ph.D. (Engineering); Senior researcher</p></bio><bio xml:lang="ru"><p>канд. техн. наук; старший научный сотрудник</p></bio><email>imz@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8394-0054</contrib-id><contrib-id contrib-id-type="scopus">57192079307</contrib-id><contrib-id contrib-id-type="spin">4307-8922</contrib-id><name-alternatives><name xml:lang="en"><surname>Gozbenko</surname><given-names>Valeriy E.</given-names></name><name xml:lang="ru"><surname>Гозбенко</surname><given-names>Валерий Ерофеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>D.Sc. (Engineering), Professor</p></bio><bio xml:lang="ru"><p>доктор техн. наук, профессор</p></bio><email>vgozbenko@inbox.ru</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-5900-065X</contrib-id><contrib-id contrib-id-type="scopus">56281057500</contrib-id><contrib-id contrib-id-type="researcherid">ADE-9780-2022</contrib-id><contrib-id contrib-id-type="spin">2106-3870</contrib-id><name-alternatives><name xml:lang="en"><surname>Kononenko</surname><given-names>Roman V.</given-names></name><name xml:lang="ru"><surname>Кононенко</surname><given-names>Роман Владимирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Ph.D. (Engineering), Associate Professor</p></bio><bio xml:lang="ru"><p>канд. техн. наук, доцент</p></bio><email>istu_politeh@mail.ru</email><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8533-0214</contrib-id><contrib-id contrib-id-type="scopus">57205436485</contrib-id><contrib-id contrib-id-type="researcherid">JSL-1456-2023</contrib-id><contrib-id contrib-id-type="spin">6788-6241</contrib-id><name-alternatives><name xml:lang="en"><surname>Konstantinova</surname><given-names>Marina V.</given-names></name><name xml:lang="ru"><surname>Константинова</surname><given-names>Марина Витальевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Ph.D. (Chemical), Associate Professor</p></bio><bio xml:lang="ru"><p>канд. хим. наук, доцент</p></bio><email>mavikonst@mail.ru</email><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8719-7728</contrib-id><contrib-id contrib-id-type="scopus">55769467700</contrib-id><contrib-id contrib-id-type="researcherid">AAY-3936-2020</contrib-id><contrib-id contrib-id-type="spin">4616-4904</contrib-id><name-alternatives><name xml:lang="en"><surname>Guseva</surname><given-names>Elena A.</given-names></name><name xml:lang="ru"><surname>Гусева</surname><given-names>Елена Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Ph.D. (Engineering), Associate Professor</p></bio><bio xml:lang="ru"><p>канд. техн. наук, доцент</p></bio><email>el.guseva@rambler.ru</email><xref ref-type="aff" rid="aff5"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">A.P. Vinogradov Institute of Geochemistry of the Siberian Branch of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт геохимии им. А.П. Виноградова Сибирского отделения Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Cherepovets State University</institution></aff><aff><institution xml:lang="ru">Череповецкий государственный университет</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Irkutsk State Transport University</institution></aff><aff><institution xml:lang="ru">Иркутский государственный университет путей сообщения</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Angarsk State Technical University</institution></aff><aff><institution xml:lang="ru">Ангарский государственный технический университет</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Irkutsk National Research Technical University</institution></aff><aff><institution xml:lang="ru">Иркутский национальный исследовательский технический университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-09-15" publication-format="electronic"><day>15</day><month>09</month><year>2025</year></pub-date><volume>27</volume><issue>3</issue><issue-title xml:lang="en">VOL 27, NO3 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 27, №3 (2025)</issue-title><fpage>6</fpage><lpage>22</lpage><history><date date-type="received" iso-8601-date="2025-09-10"><day>10</day><month>09</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Kondratiev V.V., Gozbenko V.E., Kononenko R.V., Konstantinova M.V., Guseva E.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Кондратьев В.В., Гозбенко В.Е., Кононенко Р.В., Константинова М.В., Гусева Е.А.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Kondratiev V.V., Gozbenko V.E., Kononenko R.V., Konstantinova M.V., Guseva E.A.</copyright-holder><copyright-holder xml:lang="ru">Кондратьев В.В., Гозбенко В.Е., Кононенко Р.В., Константинова М.В., Гусева Е.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rcsi.science/1994-6309/article/view/308838">https://journals.rcsi.science/1994-6309/article/view/308838</self-uri><abstract xml:lang="en"><p><bold>Introduction. </bold>The resistance spot welding (RSW) process has proven to be widely applicable across various industrial sectors, especially for mass production. Typical fields of application include aerospace, automotive, furniture manufacturing, and other industries. However, the RSW process presents certain challenges when welding aluminum and its alloys. Generally, aluminum alloys produce poor welds due to their physical and metallurgical properties such as oxide formation, thermal expansion and contraction, lower weldability, and the formation of intermetallic compounds. This study aims to evaluate the feasibility and mechanical characteristics of RSW joints in Al-5 Mg aluminum alloys. <bold>The purpose</bold> is to assess the potential of resistance spot welding for aluminum alloys and to determine the influence of key RSW parameters on the microstructure and properties of the weld. <bold>Research methods</bold>. Al-5 Mg aluminum alloy sheets in as-received condition were used. Spot welding was performed using a stationary resistance spot welding machine MT-4240. Samples for analysis were cut, polished, and subsequently examined under an optical microscope. Hardness measurements were carried out using a microhardness tester along two directions: radially across the nugget and through the sheet thickness, employing a 100 g load. An Instron electromechanical testing machine was utilized for shear testing at a constant traverse speed of 1 mm/min until complete joint failure at room temperature. The nugget diameter was measured on the fracture surface after shear tensile testing. <bold>Results and Discussion</bold>. Optimal input parameters for welding 2.5 mm thick aluminum sheets were identified, and three output variables were analyzed: tensile strength, joint hardness, and nugget diameter. It was observed that joint strength improved significantly with increased process parameters (welding current and welding period). Nugget diameter showed a clear correlation with input parameters related to current and welding period. An increase in process parameters, i.e., weld cycle time, electrode force, and welding current, led to an increase in nugget size. The ratio of weld strength to base metal strength reached approximately 0.9. It is demonstrated that resistance spot welding of 2.5 mm thick Al-5 Mg aluminum sheets is feasible and can be employed in various industrial applications.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение.</bold> Процесс контактной точечной сварки (RSW) широко применяется в различных отраслях промышленности, особенно для массового производства, – в авиационной, автомобильной, мебельной промышленности и др. Процесс RSW имеет некоторые трудности при сварке алюминия и его сплавов. Как правило, алюминиевые сплавы дают плохие сварные швы из-за их физических и металлургических свойств, таких как образование оксидов, тепловое расширение, тепловое сжатие, меньшая свариваемость и образование интерметаллических соединений. Настоящее исследование направлено на оценку осуществимости и механическую характеристику сварных швов RSW на алюминиевых сплавах типа АМг-5. <bold>Цель работы:</bold> оценить возможности контактной точечной сварки алюминиевых сплавов, определить влияние основных параметров RSW на структуру и свойства сварного шва. <bold>Методы исследования.</bold> Использовали листы алюминиевого сплава АМг-5 в состоянии поставки. Точечная сварка выполнялась стационарной контактной точечной сварочной машиной МТ-4240. Образцы для проведения исследований вырезались, полировались и в последующем анализировались на оптическом микроскопе, твердость измерялась микротвердомером. Измерения твердости проводились в двух направлениях (вдоль радиуса ядра и по толщине листа) с применением машины под нагрузкой 100 г. Электромеханическая испытательная машина Instron использовалась для испытаний на сдвиг при постоянной скорости траверсы 1 мм/мин до окончательного разрушения соединения при комнатной температуре. Диаметр ядра измерялся на поверхности излома после испытания на сдвиг при растяжении. <bold>Результаты и обсуждение.</bold> Были определены оптимальные входные параметры процесса для сварки листов алюминия толщиной 2,5 мм, проанализированы три выходные переменные, а именно прочность на разрыв, твердость соединения и диаметр ядра. Было отмечено, что прочность соединения значительно улучшилась за счет увеличения параметров процесса (силы тока, времени сварки). Диаметр ядра сварочной точки находится в корреляции с входными параметрами по току и времени процесса. Было замечено, что увеличение параметров процесса, т. е. времени цикла сварки, давления электрода и сварочного тока, приводит к увеличению размера ядра сварки. Отношение прочности сварной точки к прочности основного металла составляет 0,9. Показано, что сварка алюминиевых листов АМг-5 толщиной 2,5 мм методом RSW возможна и может быть использована в различных отраслях.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Welding</kwd><kwd>Resistance Spot Welding (RSW)</kwd><kwd>Nugget</kwd><kwd>Heat-Affected Zone (HAZ)</kwd><kwd>Aluminum</kwd><kwd>Hardness</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Сварка</kwd><kwd>контактная точечная сварка</kwd><kwd>ядро</kwd><kwd>зона термического влияния</kwd><kwd>алюминий</kwd><kwd>твердость</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Кочергин К.А. Контактная сварка. – Л.: Машиностроение, 1987. – 240 с.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Орлов Б.Д. Технология и оборудование контактной сварки. – М.: Машиностроение, 1986. – 352 с.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Zhou K., Yao P. 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