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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">resar</journal-id><journal-title-group><journal-title xml:lang="ru">Природные ресурсы Арктики и Субарктики</journal-title><trans-title-group xml:lang="en"><trans-title>Arctic and Subarctic Natural Resources</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2618-9712</issn><issn pub-type="epub">2686-9683</issn><publisher><publisher-name>Академия наук Республики Саха (Якутия)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31242/2618-9712-2020-25-3-14</article-id><article-id custom-type="elpub" pub-id-type="custom">resar-224</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>Металлургия и материаловедение. Материаловедение</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Metallurgy and materials science. Materials science</subject></subj-group></article-categories><title-group><article-title>Анализ разрушения материала трубы поддува котельной, эксплуатируемой в экстремальных условиях Арктики</article-title><trans-title-group xml:lang="en"><trans-title>Failure analysis of the material of water boiler pipe operated in the Arctic zone of the Republic of Sakha (Yakutia)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2360-7983</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лепов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Lepov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ЛЕПОВ Валерий Валерьевич, доктор технических  наук, директор</p><p>677980, Якутск, ул. Октябрьская, 1</p></bio><bio xml:lang="en"><p>LEPOV Valeriy Valerievich, doctor of technical sciences, director</p><p>1 Oktyabrskaya str., Yakutsk 677980</p></bio><email xlink:type="simple">wisecold@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7392-6571</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ачикасова</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Achikasova</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>АЧИКАСОВА Валентина Семеновна, ведущий инженер</p><p>677980, Якутск, ул. Октябрьская, 1</p></bio><bio xml:lang="en"><p>ACHIKASOVA Valentina Semenovna, engineer</p><p>1 Oktyabrskaya str., Yakutsk 677980</p></bio><email xlink:type="simple">achikasova@iptpn.ysn.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>Махарова</surname><given-names>С. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Makharova</surname><given-names>S. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>МАХАРОВА Сусанна Николаевна, кандидат технических наук, старший научный сотрудник</p><p>677980, Якутск, ул. Октябрьская, 1</p></bio><bio xml:lang="en"><p>MAKHAROVA Susanna Nikolaevna, candidate of technical science, leading researcher</p><p>1 Oktyabrskaya str., Yakutsk 677980</p></bio><email xlink:type="simple">snmachar@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2405-7426</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Захаров</surname><given-names>В. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Zakharov</surname><given-names>V. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ЗАХАРОВ Василий Егорович, научный сотрудник</p><p>677980, Якутск, ул. Октябрьская, 1</p></bio><bio xml:lang="en"><p>ZAKHAROV Vasilii Egorovich, researcher</p><p>1 Oktyabrskaya str., Yakutsk 677980</p></bio><email xlink:type="simple">vasss@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3936-9158</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Павлов</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pavlov</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ПАВЛОВ Никита Владимирович, зав. отделом</p><p>677980, Якутск, ул. Октябрьская, 1</p></bio><bio xml:lang="en"><p>PAVLOV Nikita Vladimirovich, head of the department of energetics problems</p><p>1 Oktyabrskaya str., Yakutsk 677980</p></bio><email xlink:type="simple">pavlov_nv@iptpn.ysn.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Институт физико-технических проблем Севера им. В.П. Ларионова СО РАН<country>Россия</country></aff><aff xml:lang="en">Larionov Institute of the physical-technical problems of the North SB RAS<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>24</day><month>09</month><year>2023</year></pub-date><volume>25</volume><issue>3</issue><fpage>143</fpage><lpage>151</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лепов В.В., Ачикасова В.С., Махарова С.Н., Захаров В.Е., Павлов Н.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Лепов В.В., Ачикасова В.С., Махарова С.Н., Захаров В.Е., Павлов Н.В.</copyright-holder><copyright-holder xml:lang="en">Lepov V.V., Achikasova V.S., Makharova S.N., Zakharov V.E., Pavlov N.V.</copyright-holder><license 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://resar.elpub.ru/jour/article/view/224">https://resar.elpub.ru/jour/article/view/224</self-uri><abstract><p>В работе произведен анализ режима работы трубы поддува угольного котла КВм-2.5ЛБ котельной, эксплуатируемой в одном из арктических поселков Республики Саха (Якутия), а также методами оптической и электронной растровой микроскопии исследованы образцы разрушенного участка трубы. Определен состав металла, с помощью метода измерения микротвердости оценены его механические характеристики. Хотя вначале микроструктурный анализ указывал на то, что материал трубы подвергнут сильному перегреву, однако более чем двукратное утонение стенки трубы и наличие свищей, которые в дальнейшем неоднократно заваривались, доказывало коррозионный характер разрушения. Расчет показал гарантированное достижение точки росы и конденсацию влаги на трубе вследствие специфического низкотемпературного режима в большом диапазоне влажности воздуха при эксплуатации котла. Конструкция котла, или материал труб, таким образом, должны быть изменены вследствие того, что не удовлетворяют экстремальным условиям эксплуатации, поскольку низкие температуры окружающей среды вызывают интенсификацию теплообмена, понижение температуры выходных газов, конденсацию влаги и коррозию металла трубы.</p></abstract><trans-abstract xml:lang="en"><p>The failure of the air-introducing pipe of water boiler in an Arctic settlement of the Republic of Sakha (Yakutia) was studied. The operation mode was studied, and the samples of the destroyed pipe material were investigated by means of optical and electron scanning microscopy. Metal composition was determined, and mechanical characteristics were evaluated. Microstructure analysis initially pointed to a strong thermal overheating of the pipe material, however, more than twofold thinning of the pipe wall and the presence of flaws that were repaired by manual arc welding several times later on proved the corrosion nature of destruction. Calculation revealed that the dew point was reached and moisture was condensed on the pipe as a concequence of specific low-temperature regime within a large range of air humidity during the operation of the boiler. Thus, it is necessary to change the design of the boiler or the pipe material because the existing version does not suite the extremal performance conditions, since the low a,bient temperature causes intensification of heat exchange, a decrease in the temperature of stack effluent, condensation of moisture and corrosion of the pipe metal.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>трубная сталь</kwd><kwd>перегрев</kwd><kwd>микроструктура</kwd><kwd>электронная микроскопия</kwd><kwd>микротвердость</kwd><kwd>элементный анализ</kwd><kwd>коррозия</kwd><kwd>точка росы</kwd><kwd>разрушение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>pipe steel</kwd><kwd>thermal overheating</kwd><kwd>microstructure</kwd><kwd>electron microscopy</kwd><kwd>microhardness</kwd><kwd>spectral analysis</kwd><kwd>corrosion</kwd><kwd>dew point</kwd><kwd>fracture</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа выполнена при поддержке Российского фонда фундаментальных исследований (проект 18-48-140015) и Программы фундаментальных научных исследований государственных академий наук (проект III.28.1.1.) с использованием оборудования Центра коллективного пользования ФИЦ ЯНЦ СО РАН.</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The reported study was partially funded by RFBR, project number 18-48-140015, in theoretical and scanning microscopy research, and by Ministry of Science and Education of Russian Federation, Project III.28.1.1 in the frames of Program for Basic Research of the Siberian Branch of Russian Academy of sciences, in experimental spectral analysis, optical metallography and microhardness study. 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