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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">npe</journal-id><journal-title-group><journal-title xml:lang="ru">Ядерная физика и инжиниринг</journal-title><trans-title-group xml:lang="en"><trans-title>Nuclear Physics and Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-5629</issn><issn pub-type="epub">2079-5637</issn><publisher><publisher-name>МИФИ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.56304/S2079562924050385</article-id><article-id custom-type="edn" pub-id-type="custom">SYZSEW</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-382</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>Радиационная стойкость материалов и аппаратуры</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Radiation Resistance of Materials and Equipment</subject></subj-group></article-categories><title-group><article-title>ЭКСПЕРИМЕНТЫ ПО ПЕРЕОРИЕНТАЦИИ ГИДРИДОВ В НЕОБЛУЧЕННЫХ ТРУБАХ НАПРАВЛЯЮЩИХ КАНАЛОВ ИЗ СПЛАВА Э635</article-title><trans-title-group xml:lang="en"><trans-title>Experiments on Reorientation of Hydrides in Unirradiated E635 Guide Tubes</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>Плясов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Plyasov</surname><given-names>A. A.</given-names></name></name-alternatives><email xlink:type="simple">alex_plyasov@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>Сабуров</surname><given-names>Н. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Saburov</surname><given-names>N. S.</given-names></name></name-alternatives><email xlink:type="simple">alex_plyasov@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>Бекренев</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bekrenev</surname><given-names>S. A.</given-names></name></name-alternatives><email xlink:type="simple">alex_plyasov@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>Исаенкова</surname><given-names>М. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Isaenkova</surname><given-names>M. G.</given-names></name></name-alternatives><email xlink:type="simple">alex_plyasov@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петров</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrov</surname><given-names>M. I.</given-names></name></name-alternatives><email xlink:type="simple">alex_plyasov@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Джумаев</surname><given-names>П. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Dzhumaev</surname><given-names>P. S.</given-names></name></name-alternatives><email xlink:type="simple">alex_plyasov@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>АО “Высокотехнологический научно-исследовательский институт неорганических материалов имени академика А.А. Бочвара” (АО “ВНИИНМ”)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>JSC Bochvar High-Tech Scientific and Research Institute of Inorganic Materials (JSC VNIINM)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный исследовательский ядерный университет “МИФИ”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research Nuclear University “MEPhI” MEPhI (Moscow Engineering Physics Institute)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>20</day><month>12</month><year>2024</year></pub-date><volume>15</volume><issue>5</issue><fpage>434</fpage><lpage>449</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Плясов А.А., Сабуров Н.С., Бекренев С.А., Исаенкова М.Г., Петров М.И., Джумаев П.С., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Плясов А.А., Сабуров Н.С., Бекренев С.А., Исаенкова М.Г., Петров М.И., Джумаев П.С.</copyright-holder><copyright-holder xml:lang="en">Plyasov A.A., Saburov N.S., Bekrenev S.A., Isaenkova M.G., Petrov M.I., Dzhumaev P.S.</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://npe.elpub.ru/jour/article/view/382">https://npe.elpub.ru/jour/article/view/382</self-uri><abstract><p>В работе представлены результаты экспериментального исследования переориентации гидридов в необлученных трубах направляющих каналов (НК) из сплава Э635. Определен ключевой параметр для образования радиальных гидридов – пороговое напряжение переориентации. Исследованы отдельные особенности микроструктуры гидридов различной ориентации. Показано, что при скоростях охлаждения, характерных для использования сплава в активных зонах тепловых реакторов, фазовый состав гидридов циркония однороден – присутствует только δ-фаза.</p></abstract><trans-abstract xml:lang="en"><p>Experimental results for hydrides reorientation in unirradiated E635 guide tubes are presented. The key parameter for reorientation – the threshold stress was found. Some features of microstructure of hydrides with different orientation are discussed. For cooling rates, which are specific for active zones of pressurized water reactors, δ-hydride is shown to be the only phase that occurs.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>цирконий</kwd><kwd>Э635</kwd><kwd>гидрид</kwd><kwd>переориентация</kwd><kwd>пороговое напряжение</kwd><kwd>коэффициент ориентации</kwd><kwd>микроструктура</kwd><kwd>текстура</kwd><kwd>рентгеноструктурный анализ</kwd><kwd>сканирующая электронная микроскопия</kwd><kwd>просвечивающая электронная микроскопия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>zirconium</kwd><kwd>E635</kwd><kwd>hydride</kwd><kwd>reorientation</kwd><kwd>threshold stress</kwd><kwd>orientation coefficient</kwd><kwd>microstructure</kwd><kwd>texture</kwd><kwd>X-ray analysis</kwd><kwd>scanning electron microscopy</kwd><kwd>transmission electron microscopy</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают благодарность д. т. н. Маркелову В.А. за плодотворное обсуждение постановки задачи и полученных результатов, Сабурову А.С., Шелепову И.А., и Лукашеву С.И. за техническое сопровождение наводороживания образцов и проведения экспериментов по переориентации гидридов.</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">Douglass D.L. The Metallurgy of Zirconium. Atomic Energy Review. 1971. Vienna: IAEA.</mixed-citation><mixed-citation xml:lang="en">Douglass D.L. The Metallurgy of Zirconium. Atomic Energy Review. 1971. Vienna: IAEA.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Zaimovsky A.S., Nikulina A.V., Reshetnikov N.G. Zirconium Alloys in Atomic Engineering. 1981. Moscow: Mosenergoizdat (in Russian).</mixed-citation><mixed-citation xml:lang="en">Zaimovsky A.S., Nikulina A.V., Reshetnikov N.G. 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