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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/S2079562923010268</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-339</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>Перспективные конструкционные материалы</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Promising Structural Materials</subject></subj-group></article-categories><title-group><article-title>СРАВНИТЕЛЬНОЕ ИССЛЕДОВАНИЕ ОСОБЕННОСТЕЙ СТРУКТУРЫ БЫСТРОЗАКАЛЕННЫХ REP-ПОРОШКОВ, PM HIP КОМПАКТОВ И ИЗДЕЛИЙ ИЗ АУСТЕНИТНЫХ КОРРОЗИОННО-СТОЙКИХ СТАЛЕЙ И ИХ ТРАДИЦИОННЫХ АНАЛОГОВ</article-title><trans-title-group xml:lang="en"><trans-title>A Comparative Study of the Structure Features of Rapidly Quenched REP-Powders, PM HIP Compacts, Products of Austenitic Stainless Steels and Their Traditional Counterparts</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>Шульга</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shulga</surname><given-names>A. V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский ядерный университет “МИФИ”, Москва, 115409 Россия</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, 115409 Russia</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>14</day><month>09</month><year>2024</year></pub-date><volume>15</volume><issue>2</issue><fpage>116</fpage><lpage>132</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шульга А.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Шульга А.В.</copyright-holder><copyright-holder xml:lang="en">Shulga A.V.</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/339">https://npe.elpub.ru/jour/article/view/339</self-uri><abstract><p>Быстрозакаленные REP порошки, полученные распылением (атомизацией) расплава, очевидно, характеризуются таким же влиянием скорости закалки на структурные особенности, как и при традиционной твердофазной закалке. Однако критическая скорость охлаждения, определяемая по ТТТ диаграмме для фазового превращения расплава при атомизации–кристаллизации, значительно выше, чем ее значение для ТТТ диаграммы при использовании традиционной твердофазной закалки. Важные особенности быстрозакаленных порошков – высокая дисперсность дендритной структуры и образование микро- и нанозернистой структуры – определяют особенности выделения карбидных и боридных фаз. Прямые ядерно-физические методы активационной авторадиографии по углероду, трековой авторадиографии по бору, металлографию, SEM, EDX и др. использовались при проведении исследования. Выявлены и проанализированы структурные особенности, в том числе распределение углерода и бора, выделения карбидных и боридных фаз, параметр решетки твердого раствора аустенита для быстрозакаленных REP порошков, PM HIP компактов, изделий – твэльных труб из аустенитных коррозионно-стойких сталей и их аналогов, полученных по традиционной технологии, с учетом роли углерода и бора, выделения карбидов, боридов и влияния неравновесных состояний исследуемых аустенитных сталей.</p></abstract><trans-abstract xml:lang="en"><p>Rapidly quenched REP-powders produced by melt atomization, evidently, can be characterized by the effect of quenching rate on structure features as in traditional solid state quenching. However, the critical cooling rate, determined in the TTT diagram for melt phase transformation: crystallization is much higher than its value for suppressing austenite transformation in carbon steels. Important features of rapidly quenched powders – high dispersity of dendrites and formation of fine subgrain structure – determine the precipitation of carbides and borides. Direct nuclear methods of activation autoradiography on carbon, track autoradiography on boron, metallography, SEM, EDX, etc were used for investigation. The structure features including the lattice parameter of a solid solution of rapidly quenched REP powders, HIP PM compacts, products of austenitic stainless steels and their traditional counterparts were revealed and analyzed taking into account the role of carbon and boron, precipitation of carbides, borides and effect of non-equilibrium states.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>аустенитные коррозионно-стойкие стали</kwd><kwd>быстрозакаленный порошок</kwd><kwd>REP-методы</kwd><kwd>PM HIP</kwd><kwd>традиционная технология</kwd><kwd>авторадиография</kwd><kwd>углерод</kwd><kwd>бор</kwd><kwd>микроструктура</kwd><kwd>параметр решетки аустенита</kwd><kwd>механические свойства</kwd></kwd-group><kwd-group xml:lang="en"><kwd>stainless steels</kwd><kwd>rapidly quenched powder</kwd><kwd>REP-techniques</kwd><kwd>PM HIP</kwd><kwd>traditional technology</kwd><kwd>hot deformation</kwd><kwd>heat treatment</kwd><kwd>autoradiography</kwd><kwd>carbon</kwd><kwd>boron</kwd><kwd>microstructure</kwd><kwd>mechanical properties</kwd><kwd>lattice parameters</kwd><kwd>non-equilibrium states</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">&lt;em&gt;Zinkle S.J., Was G.S.&lt;/em&gt; // Acta Mater. 2013. 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