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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">lim</journal-id><journal-title-group><journal-title xml:lang="ru">Литье и металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1683-6065</issn><issn pub-type="epub">2414-0406</issn><publisher><publisher-name>BNTU</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21122/1683-6065-2022-3-30-35</article-id><article-id custom-type="elpub" pub-id-type="custom">lim-3481</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>Литейное производство</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Foundry</subject></subj-group></article-categories><title-group><article-title>Усадочные явления в силуминах при обработке модификаторами длительного действия</article-title><trans-title-group xml:lang="en"><trans-title>Shrinkage phenomena in silumins when treated with long‑acting modifiers</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>Андрушевич</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Andrushevich</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">andru49@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>Садоха</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sadokha</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">cadoxa@rambler.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный аграрный технический университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian State Agricultural Technical University</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский национальный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Belarusian National Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>12</day><month>10</month><year>2022</year></pub-date><volume>0</volume><issue>3</issue><fpage>30</fpage><lpage>35</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Андрушевич А.А., Садоха М.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Андрушевич А.А., Садоха М.А.</copyright-holder><copyright-holder xml:lang="en">Andrushevich A.A., Sadokha M.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://lim.bntu.by/jour/article/view/3481">https://lim.bntu.by/jour/article/view/3481</self-uri><abstract><p>Рассмотрено влияние различных модифицирующих добавок на усадочную пористость силуминов и герметичность отливок. Проведена сравнительная оценка модифицирования на составляющие усадки в получаемых заготовках. Установлены зависимости содержания стронция в расплаве силумина от времени выдержки расплава. Выявлена взаимосвязь уровня брака алюминиевых отливок от содержания стронция. В связи с тем что уровень брака алюминиевых отливок по причине негерметичности не имеет прямой зависимости от величины пористости в сплаве, сделано предположение, что стронций оказывает существенные изменения в механизм кристаллизации сплава и распределение микропористости в структуре сплава с формированием более развитой сети связанных между собой каналов.</p></abstract><trans-abstract xml:lang="en"><p>The influence of various modifying additives on the shrinkage porosity of silumins and the tightness of castings is considered. A comparative assessment of the modification of the shrinkage components in the resulting blanks was carried out. The dependences of the strontium content in the silumin melt depending on the melt holding time are established. The relationship between the level of scrap of aluminum castings and the content of strontium has been revealed. Due to the fact that the level of rejection of aluminum castings due to leakiness does not directly depend on the porosity in the alloy, it is suggested that strontium has significant changes in the mechanism of crystallization of the alloy and the distribution of microporosity in the alloy structure with the formation of a more developed channels.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>герметичность</kwd><kwd>литье</kwd><kwd>модифицирование</kwd><kwd>отливка</kwd><kwd>свойства</kwd><kwd>силумин</kwd></kwd-group><kwd-group xml:lang="en"><kwd>tightness</kwd><kwd>casting</kwd><kwd>modification</kwd><kwd>casting</kwd><kwd>properties</kwd><kwd>silumin</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">Марукович Е. И., Стеценко В. Ю. Проблема модифицирования алюминиево‑кремниевых эвтектик и силуминов // Литье и металлургия. 2018. № 2. 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