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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">zldm</journal-id><journal-title-group><journal-title xml:lang="ru">Заводская лаборатория. Диагностика материалов</journal-title><trans-title-group xml:lang="en"><trans-title>Industrial laboratory. Diagnostics of materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1028-6861</issn><issn pub-type="epub">2588-0187</issn><publisher><publisher-name>ООО «Издательство «ТЕСТ-ЗЛ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26896/1028-6861-2023-89-4-50-62</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-1911</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>МЕХАНИКА МАТЕРИАЛА: ПРОЧНОСТЬ, РЕСУРС, БЕЗОПАСНОСТЬ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIALS MECHANICS: STRENGTH, DURABILITY, SAFETY</subject></subj-group></article-categories><title-group><article-title>Циклическое поведение жаропрочных никелевых сплавов ЭП741НП и ЭИ698ВД при жестком нагружении</article-title><trans-title-group xml:lang="en"><trans-title>Cyclic behavior of heat resistant nickel-base alloys EP741NP and EI698VD under strain-control loading</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>Худякова</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Khudiakova</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анастасия Дмитриевна Худякова</p><p> 111116, Москва, Авиамоторная ул., д. 2</p></bio><bio xml:lang="en"><p>Anastasiya D. Khudiakova</p><p> 2, Aviamotornaya ul., Moscow, 111116</p></bio><email xlink:type="simple">adkhudyakova@ciam.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>Серветник</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Servetnik</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Антон Николаевич Серветник</p><p> 111116, Москва, Авиамоторная ул., д. 2</p></bio><bio xml:lang="en"><p>Anton N. Servetnik</p><p> 2, Aviamotornaya ul., Moscow, 111116</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Волков</surname><given-names>М. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Volkov</surname><given-names>M. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Евгеньевич Волков</p><p> 111116, Москва, Авиамоторная ул., д. 2</p></bio><bio xml:lang="en"><p>Mikhail E. Volkov</p><p> 2, Aviamotornaya ul., Moscow, 111116</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Полянский</surname><given-names>С. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Polianskii</surname><given-names>S. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Станислав Богданович Полянский</p><p> 194100, г. Санкт-Петербург, Кантемировская ул., д. 11</p></bio><bio xml:lang="en"><p>Stanislav B. Polianskii</p><p> 11, Kantemirovskaya ul., St. Petersburg, 194100</p></bio><email xlink:type="simple">klimov@klimov.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Центральный институт авиационного моторостроения им. П. И. Баранова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Central Institute of Aviation Motors</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>АО «ОДК-Климов»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>JSC «UEC-Klimov»</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>22</day><month>04</month><year>2023</year></pub-date><volume>89</volume><issue>4</issue><fpage>50</fpage><lpage>62</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Худякова А.Д., Серветник А.Н., Волков М.Е., Полянский С.Б., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Худякова А.Д., Серветник А.Н., Волков М.Е., Полянский С.Б.</copyright-holder><copyright-holder xml:lang="en">Khudiakova A.D., Servetnik A.N., Volkov M.E., Polianskii S.B.</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://www.zldm.ru/jour/article/view/1911">https://www.zldm.ru/jour/article/view/1911</self-uri><abstract><p>Исследовано циклическое поведение жаропрочных никелевых сплавов ЭП741НП и ЭИ698ВД в области малоцикловой усталости при жестком отнулевом режиме испытаний образцов в широком диапазоне размахов деформаций и температур. Проанализированы зависимости амплитуды напряжений, среднего напряжения цикла и размаха пластической деформации от числа циклов. Выделены три стадии циклического поведения материалов: первая — стадия неустановившегося поведения, на которой может происходить как упрочнение или разупрочнение, так и смена упрочнения разупрочнением; вторая — стадия установившегося упрочнения, разупрочнения или стабильности; третья — стадия, связанная с развитием трещины. Предложены качественные и количественные параметры, позволяющие определять на основе анализа зависимости размаха пластических деформаций от номера цикла долю первой стадии циклической нестабильности в общей циклической долговечности и характер поведения материалов на первой и второй стадиях. Для обоих сплавов отмечено отсутствие циклической стабильности практически во всем диапазоне испытаний. Показано, что вклад первой стадии в общую долговечность может составлять до 30 %, причем он тем больше, чем выше размах деформации. Выявлена зависимость характера поведения материалов от температуры. Сплав ЭП741НП на первой и второй стадиях при комнатной температуре разупрочняется, а при повышенных температурах 300, 450 и 600 °C склонен к упрочнению. Сплав ЭИ698ВД на первой стадии при 20 и 400 °C упрочняется, а при 650 °C уже склонен к разупрочнению. На второй стадии сплав ЭИ698ВД при 20 и 650 °C имеет тенденцию к разупрочнению, при 400 °C — к упрочнению. При размахах деформаций 0,6 и 0,7 % оба сплава можно считать циклически стабильными на второй стадии во всем диапазоне температур.</p></abstract><trans-abstract xml:lang="en"><p>Low cycle fatigue behavior of nickel-base alloys EP741NP and EI698VD under strain-control loading with zero strain ratio was studied for a wide range of strain amplitudes and temperatures. Dependences of the stress amplitude, mean stress and plastic strain range on the number of cycles were analyzed. Three stages of the cyclic behavior were marked out: the first stage of non-steady behavior with hardening, or softening, or transition from hardening to softening; the second stage of steady hardening, softening or stability; and the third stage associated with a crack development. Qualitative and quantitative parameters are proposed that make it possible to determine a share of the first stage of cyclic instability in the total cyclic durability and the nature of the material behavior in the first and second stages proceeding from the analysis of the dependence of the range of plastic deformations on the cycle number. The absence of cyclic stability was demonstrated for both alloys almost in the whole range of testing. It was shown, that the contribution of the first stage to the fatigue life (total durability) can be up to 30% and the greater the strain range, the greater the contribution. The temperature dependence of the character of cyclic behavior of materials is revealed. Alloy EP741NP is softened at the first and second stages at room temperature and is liable to hardening at elevated temperatures 300, 450, and 600°C, whereas alloy EI698VD is hardened at the first stage at 20 and 400°C, but inclines to softening at 650°C. At the second stage alloy EI698VD inclines to softening at 20 and 650°C and is liable to hardening at 400°C. With strain ranges 0.6 and 0.7%, both alloys can be considered cyclic stable at the second stage over the entire temperature range</p></trans-abstract><kwd-group xml:lang="ru"><kwd>жаропрочный никелевый сплав</kwd><kwd>малоцикловая усталость</kwd><kwd>жесткий режим нагружения</kwd><kwd>пластическая деформация</kwd><kwd>упрочнение</kwd><kwd>разупрочнение</kwd><kwd>стабильность</kwd><kwd>долговечность.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nickel-base superalloy</kwd><kwd>low cycle fatigue</kwd><kwd>strain-control loading</kwd><kwd>plastic strain</kwd><kwd>hardening</kwd><kwd>softening</kwd><kwd>cyclic stability</kwd><kwd>life</kwd><kwd>durability</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">Биргер И. А., Балашов Б. Ф., Дульнев Р. А. и др. 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