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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">10.21122/1683-6065-2021-4-59-65</article-id><article-id custom-type="elpub" pub-id-type="custom">lim-3392</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</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Science of materials</subject></subj-group></article-categories><title-group><article-title>Выбор химического состава сталей и их режим термического упрочнения с помощью компьютерной программы</article-title><trans-title-group xml:lang="en"><trans-title>Selection of the chemical composition of steels and their thermal hardening mode using a computer program</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>Бердиев</surname><given-names>Д. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Berdiev</surname><given-names>D. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Ташкент, ул. Университетская, 2.</p></bio><bio xml:lang="en"/><email xlink:type="simple">berdiyev_mf@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>Умарова</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Uмаrоvа</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Ташкент, ул. Университетская, 2.</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>Юсупов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yusupov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Ташкент, ул. Университетская, 2.</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>Ташкентский государственный технический университет им. И. Каримова</institution><country>Узбекистан</country></aff><aff xml:lang="en"><institution>Tashkent State Technical University named after I. Karimov</institution><country>Uzbekistan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>20</day><month>12</month><year>2021</year></pub-date><volume>0</volume><issue>4</issue><fpage>59</fpage><lpage>65</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бердиев Д.М., Умарова М.А., Юсупов А.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Бердиев Д.М., Умарова М.А., Юсупов А.А.</copyright-holder><copyright-holder xml:lang="en">Berdiev D.M., Uмаrоvа M.A., Yusupov A.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/3392">https://lim.bntu.by/jour/article/view/3392</self-uri><abstract><p>Установлены связи между параметрами структуры термически обработанных сталей и их абразивной износостойкостью. При всех температурах окончательного отпуска закаленной стали наблюдается прямая связь между ее параметрами структуры (количеством элементов в твердом растворе, плотностью дислокаций, размерами частиц цементита и межцементитного расстояния) и износостойкостью при трении скольжения о незакрепленные абразивные частицы. Разработана компьютерная программа для выбора химического состава марки стали и способов термического упрочнения с целью обеспечения требуемой износостойкости.</p></abstract><trans-abstract xml:lang="en"><p>The relationships between the parameters of the structure of heat‑treated steels and their abrasive wear resistance are established. At all temperatures of the final tempering of hardened steel, there is a direct relationship between its structure parameters (the number of elements in a solid solution, the density of dislocations, the size of cementite particles and the intercementite distance) and wear resistance when sliding friction against loose abrasive particles. A computer program has been developed to select the chemical composition of the steel grade and methods of thermal hardening in order to ensure the required wear resistance.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>термическая обработка</kwd><kwd>плотность дислокаций</kwd><kwd>экстремальная температура</kwd><kwd>низколегированная сталь</kwd><kwd>компьютерная программа</kwd></kwd-group><kwd-group xml:lang="en"><kwd>heat treatment</kwd><kwd>dislocation density</kwd><kwd>extreme temperature</kwd><kwd>low‑alloy steel</kwd><kwd>computer program</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">Ткачев В. Н. Износ и повышение долговечности деталей сельскохозяйственных машин. М.: Машиностроение, 1971. 264 с.</mixed-citation><mixed-citation xml:lang="en">Tkachev V. N. 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