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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">blackmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Черная Металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-0797</issn><issn pub-type="epub">2410-2091</issn><publisher><publisher-name>National University of Science and Technology "MISIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0368-0797-2024-3-332-339</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2737</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>СТАЛИ ОСОБОГО НАЗНАЧЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SUPERDUTY STEEL</subject></subj-group></article-categories><title-group><article-title>Определение влияния водорода на изменение микротвердости и характеристик микроструктуры образцов авиационных сплавов</article-title><trans-title-group xml:lang="en"><trans-title>Determination of hydrogen influence on microhardness and microstructure characteristics of aviation alloys</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-0228-7379</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Саулин</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Saulin</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дмитрий Владимирович Саулин, к.т.н., доцент кафедры «Химические технологии»</p><p>Россия, 614990, Пермь, Комсомольс­кий пр., 29</p></bio><bio xml:lang="en"><p>Dmitrii V. Saulin, Cand. Sci. (Eng.), Assist. Prof. of the Chair “Chemical Engineering”</p><p>29 Komsomolskii Ave., Perm 614990, Russian Federation</p></bio><email xlink:type="simple">sdv_perm@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>Кузьминых</surname><given-names>К. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuzminykh</surname><given-names>K. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Константин Геннадьевич Кузьминых, старший преподаватель кафедры «Химические технологии»</p><p>Россия, 614990, Пермь, Комсомольс­кий пр., 29</p></bio><bio xml:lang="en"><p>Konstantin G. Kuzminykh, Senior Lecturer of the Chair “Chemical En­gineering”</p><p>29 Komsomolskii Ave., Perm 614990, Russian Federation</p></bio><email xlink:type="simple">kgkuz@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>Пойлов</surname><given-names>В. З.</given-names></name><name name-style="western" xml:lang="en"><surname>Poilov</surname><given-names>V. Z.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Зотович Пойлов, д.т.н., профессор кафедры «Хими­ческие технологии», руководитель ЦКП «Центр наукоемких химических технологий и физико-химических исследований»</p><p>Россия, 614990, Пермь, Комсомольс­кий пр., 29</p></bio><bio xml:lang="en"><p>Vladimir Z. Poilov, Dr. Sci. (Eng.), Prof. of the Chair “Chemical Engineering”, Head of CUC “Center for High-tech Chemical Technologies and Physico-Chemical Research”</p><p>29 Komsomolskii Ave., Perm 614990, Russian Federation</p></bio><email xlink:type="simple">vladimirpoilov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Пермский национальный исследовательский политехнический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Perm National Research Polytechnic University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>16</day><month>06</month><year>2024</year></pub-date><volume>67</volume><issue>3</issue><fpage>332</fpage><lpage>339</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Саулин Д.В., Кузьминых К.Г., Пойлов В.З., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Саулин Д.В., Кузьминых К.Г., Пойлов В.З.</copyright-holder><copyright-holder xml:lang="en">Saulin D.V., Kuzminykh K.G., Poilov V.Z.</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://fermet.misis.ru/jour/article/view/2737">https://fermet.misis.ru/jour/article/view/2737</self-uri><abstract><p>В работе представлены результаты исследований влияния длительности воздействия водорода при атмосферном давлении и комнатной температуре на образцы двух авиационных сплавов. Один сплав (сплав 1) получен методом горячего изостатического прессования и используется для изготовления дисков ротора газовых турбин. Другой сплав (сплав 2) получен методом направленной кристаллизации и используется для изготовления лопаток газовых турбин. Установлено, что в ходе воздействия водорода на образцы сплавов в течение 1000 ч микротвердость образцов увеличивается, но при этом относительное увеличение микротвердости невелико, составляя 2,5 % для образца сплава 1 и 2 % для образца из сплава 2. Корреляционный анализ параметров дифрактограмм показал наличие положительных и отрицательных корреляционных статистически значимых связей между параметрами пиков дифрактограмм, длительностью воздействия водорода и микротвердостью образцов. У сплава 1 в процессе наводороживания наблюдается снижение ширины и увеличение высоты пиков дифрактограммы, что может быть связано со снижением количества дислокаций в зернах или их локальным накоп­лением на границах зерен материала. Напротив, у сплава 2 происходит расширение пиков, что может свидетельствовать об увеличении количества дислокаций в структуре зерен материала. Расчеты показали, что в процессе наводороживания размер кристаллита и плотность дислокаций у сплава 1 снижаются, но с задержкой по времени от начала процесса, а у сплава 2 монотонно увеличиваются, что соответствует тенденциям изменения микротвердости образцов в процессе наводороживания.</p></abstract><trans-abstract xml:lang="en"><p>This paper presents results of the studies of hydrogen exposure duration influence on the characteristics of two aviation alloys at atmospheric pressure and room temperature. First alloy (alloy 1) was obtained by hot isostatic pressing, and was used for the manufacture of gas turbine rotor discs. Second alloy (alloy 2) was obtained by directional crystallization, and was used for the manufacture of gas turbine blades. It was determined that microhardness of the samples increased during 1000 h of hydrogen exposure duration. The relative increase of the microhardness was insignificant, and for the sample of alloy 1 it was 2.5 %, and for the sample of alloy 2 – 2 %. Correlation analysis of the XRD diagram parameters indicated positive and negative statistically significant relationships correlation between XRD diagrams peaks parameters, hydrogen exposure duration and microhardness of the samples. It was revealed that XRD diagrams peaks of alloy 1 were broadened and their heights increased during hydrogenation, which can be associated with a decrease of dislocations in the grains and their local accumulation at the grains boundaries. Conterwise, XRD diagrams peaks of alloy 2 were narrowed, which can indicate an increase of dislocations in the material grain structure. XRD diagrams processing demonstrated that the crystallite size and dislocation density for alloy 1 decreased with a delay from the hydrogenation start, but for alloy 2 these parameters monotonically increased, and it corresponds to microhardness changes trends of the samples during hydrogenation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>водород</kwd><kwd>авиационные сплавы</kwd><kwd>микротвердость</kwd><kwd>корреляционный анализ</kwd><kwd>дифрактограмма</kwd><kwd>ширина пиков</kwd><kwd>плотность дислокаций</kwd><kwd>размер кристаллитов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>hydrogen</kwd><kwd>aviation alloys</kwd><kwd>microhardness</kwd><kwd>correlation analysis</kwd><kwd>XRD diagram</kwd><kwd>peak width</kwd><kwd>dislocation density</kwd><kwd>crystallite size</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания Министерства науки и высшего образования Российской Федерации на проведение фундаментальных научных исследований (проект FSNM-2023-0004).</funding-statement><funding-statement xml:lang="en">The results were obtained while fulfilling the state assignment of the Ministry of Science and Higher Education of the Russian Federation for fundamental scientific research (project FSNM-2023-0004).</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">Sun B., Lu W., Gault B., Ding R., Makineni S.K., Wan D., Wu C.-H., Chen H., Ponge D., Raabe D. 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