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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">10.17073/0368-0797-2020-1-47-56</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-1832</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>MATERIAL SCIENCE</subject></subj-group></article-categories><title-group><article-title>Легкие немагнитные стали на основе системы Fe – 25 Mn – – 5 Ni – Al – C</article-title><trans-title-group xml:lang="en"><trans-title>Light non-magnetic steels based on Fe – 25 Mn – 5 Ni – Al – C system</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>Капуткина</surname><given-names>Л. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Kaputkina</surname><given-names>L. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.ф.-м.н, профессор, главный научный сотрудник кафедры обработки металлов давлением</p><p>119049, Россия, Москва, Ленинский пр., 4</p></bio><bio xml:lang="en"><p>Dr. Sci. (Phys.–Math.), Professor, Chief Researcher of the Chair “Metal Forming”</p></bio><email xlink:type="simple">kaputkina@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>Свяжин</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Svyazhin</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., профессор, главный научный сотрудник кафедры кафедры металлургии стали, новых производственных технологий и защиты металлов</p><p>119049, Россия, Москва, Ленинский пр., 4</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Professor, Chief Researcher of the Chair of Metallurgy of Steel, New Production Technologies and Metal Protection</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>Смарыгина</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Smarygina</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент кафедры пластической деформации специальных сплавов</p><p>119049, Россия, Москва, Ленинский пр., 4</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Professor of the Chair of Plastic Deformation of Special Alloys</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>Киндоп</surname><given-names>В. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Kindop</surname><given-names>V. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., старший научный сотрудник, зам. начальника управления науки</p><p>119049, Россия, Москва, Ленинский пр., 4</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Senior Researcher, Deputy Head of Science Department</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский технологический университет «МИСиС»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National University of Science and Technology “MISIS” (MISIS)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>29</day><month>03</month><year>2020</year></pub-date><volume>63</volume><issue>1</issue><fpage>47</fpage><lpage>56</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Капуткина Л.М., Свяжин А.Г., Смарыгина И.В., Киндоп В.Э., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Капуткина Л.М., Свяжин А.Г., Смарыгина И.В., Киндоп В.Э.</copyright-holder><copyright-holder xml:lang="en">Kaputkina L.M., Svyazhin A.G., Smarygina I.V., Kindop V.E.</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/1832">https://fermet.misis.ru/jour/article/view/1832</self-uri><abstract><p>Теоретически и экспериментально изучено влияние содержания алюминия (5 – 10 %) и углерода (0,04 – 1,7 %) на фазовые прев- ращения, процессы структурообразования и механические свойства сталей системы Fe – 25Mn – 5Ni – Al – C. Оценены интервалы опти- мальных режимов кристаллизации и деформационно-термических воздействий для получения аустенитных сталей с высокой удельной прочностью. Проведены измерения твердости по сечению образцов и механические испытания в широком интервале температур холод- ной, теплой и горячей деформации, а также оценка фазового состава сталей (сплавов) на основе системы Fe – 25Mn – 5Ni – Al – C. В литом состоянии сплав с 5 % Al немагнитен, т. е. имеет аустенитную структуру, сплавы с 10 и 15 % Al – магнитные с двухфазной структурой (γ + α). Алюминий заметно повышает сопротивление деформации. При этом растут значения σ1 и σmax , т. е. растет и деформационное упрочнение и тормозятся процессы разупрочнения. С ростом скорости деформации влияние алюминия проявляется сильнее. Аустенитные высокомарганцевые сплавы с 5 % Al как с низким, так и с высоким содержанием углерода обладают достаточно большими значениями пластичности и прочности и отличаются высокой стабильностью аустенита. Легирование никелем повышает пластичность. Сплавы с со- держанием алюминия менее 10 % достаточно пластичны и в литом состоянии. Высокомарганцевые сплавы (с 25 % Mn) с содержанием алюминия до 5 – 7 % могут рассматриваться как высокопрочные хладо- и теплостойкие с термически и механически стабильным аустенитом вплоть до содержания углерода ~1,5 %.</p></abstract><trans-abstract xml:lang="en"><p>1.7 %) contents on phase transformations, structure formation processes and mechanical properties of Fe – 25Mn – 5Ni – Al – C steels was studied theoretically and experimentally. The authors have estimated intervals of optimal crystallization regimes and subsequent deformation-thermal effects for obtaining austenitic steels with high specific strength. Measurements of hardness on the section of samples and mechanical tests in a wide interval of temperatures of cold, warm and hot deformation were performed as well as the assessment of phase structure of steels (alloys) on the basis of Fe – 25Mn – 5Ni– – Al – C. In a cast state alloy with 5 % of Al was non-magnetic, i.e. it had austenitic structure; alloys with 10 – 15 % of Al were magnetic with two-phase structure (γ + α). Aluminum considerably increases deformation resistance. At the same time values σ1 and σmax grow, i.e. also deformation hardening grows and softening processes are slowed down. With growth of deformation rate, influence of Al becomes stronger. Austenitic high-manganese alloys with 5 % of Al both with low and with high content of carbon have rather high plasticity and durability, and differ in high stability of austenite. Alloying with nickel increases plasticity. Alloys with Al less than 10 % are rather plastic also in a cast state. High-manganese (from 25 % of Mn) alloys with Al content to 5 – 7 % can be considered as high-strength cold-resistant and heat-resistant with thermally and mechanically stable austenite up to carbon content ~1.5 %.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>аустенитные высокомарганцевые легкие стали</kwd><kwd>содержание алюминия</kwd><kwd>легирование никелем</kwd><kwd>прочность</kwd><kwd>пластичность</kwd><kwd>стабильность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>austenitic high-manganese light-weight steels</kwd><kwd>aluminum content</kwd><kwd>alloying with nickel</kwd><kwd>durability</kwd><kwd>plasticity</kwd><kwd>stabilitymud</kwd><kwd>impact resistance</kwd><kwd>abrasion strength</kwd><kwd>ferrite bond</kwd><kwd>silicate bond</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">Moor E.D., Gibbs P.J., Speer J.G., Matlock D. 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