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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">10.21122/1683-6065-2020-2-22-25</article-id><article-id custom-type="elpub" pub-id-type="custom">lim-3203</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>Влияние термической обработки на структурно-фазовое состояние и дюрометрические свойства малоразмерных отливок из медного сплава Cu-Cr-Al</article-title><trans-title-group xml:lang="en"><trans-title>The influence of heat treatment on the structural phase state and durometric properties of small-sized castings from a copper alloy Cu-Cr-Al</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>Марукович</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Marukovich</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Могилев, ул. Бялыницкого-Бирули, 11</p></bio><bio xml:lang="en"/><email xlink:type="simple">maruko46@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>Кукареко</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kukareko</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Минск, ул. Академическая, 12</p></bio><bio xml:lang="en"/><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Харьков</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kharkov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Могилев, ул. Бялыницкого-Бирули, 11</p></bio><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кушнеров</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kushnerov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Минск, ул. Академическая, 12</p></bio><bio xml:lang="en"/><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сазоненко</surname><given-names>И. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Sazonenko</surname><given-names>I. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Могилев, ул. Бялыницкого-Бирули, 11</p></bio><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт технологии металлов НАН Беларуси</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Institute of Technology of Metals of the National Academy of Sciences of Belarus</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Объединенный институт машиностроения НАН Беларуси</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Joint Institute of Mechanical Engineering of the National Academy of Sciences of Belarus</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>09</day><month>06</month><year>2020</year></pub-date><volume>0</volume><issue>2</issue><fpage>22</fpage><lpage>25</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Марукович Е.И., Кукареко В.А., Харьков В.А., Кушнеров А.В., Сазоненко И.О., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Марукович Е.И., Кукареко В.А., Харьков В.А., Кушнеров А.В., Сазоненко И.О.</copyright-holder><copyright-holder xml:lang="en">Marukovich E.I., Kukareko V.A., Kharkov V.A., Kushnerov V.A., Sazonenko I.O.</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/3203">https://lim.bntu.by/jour/article/view/3203</self-uri><abstract><p>В работе исследовано влияние термической обработки на структурно-фазовое состояние и твердость малоразмерных отливок из медного сплава Cu-Cr-Al, полученных литьем в водоохлаждаемый металлический кокиль. Методом рентгеноструктурного анализа установлено, что отливки состоят из матричного твердого раствора на основе меди. Повышенное значение параметра кристаллической решетки медной фазы связано с растворенными в ней атомами алюминия. После низкотемпературного (450 °C) отпуска в течение 10 ч параметр кристаллической решетки матричного твердого раствора уменьшается, что связано с образованием на поверхности отливки интерметаллида Al8Cr5.Установлено, что после термической обработки (закалки и отпуска) твердость отливок из сплава CuCrAl увеличивается в 1,5 раза.</p></abstract><trans-abstract xml:lang="en"><p>The effect of heat treatment on the structural-phase state and hardness of small-sized castings made from the Cu-Cr-Al copper alloy obtained by casting in a water-cooled metal mold is studied. Using X-ray diffraction analysis, it was found that the castings consist of a matrix solid solution based on copper. The increased value of the crystal lattice parameter of the copper phase is associated with aluminum atoms dissolved in it. After a low-temperature (450 °C) tempering for 10 hours, the crystal lattice parameter of the matrix solid solution decreases, which is associated with the formation of the Al8Cr5 intermetallic compound on the surface of the casting.</p><p>It is established that after heat treatment (hardening and tempering), the hardness of castings from the Cu-Cr-Al alloy increases by 1.5 times.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>отливки</kwd><kwd>литье в кокиль</kwd><kwd>закалка</kwd><kwd>старение</kwd><kwd>отпуск</kwd><kwd>структура</kwd><kwd>фазовый состав</kwd><kwd>твердость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>castings</kwd><kwd>casting in mold</kwd><kwd>hardening</kwd><kwd>age-hardening</kwd><kwd>tempering</kwd><kwd>structure</kwd><kwd>phase state</kwd><kwd>hardness</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">Мозберг, Р. К. 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