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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">10.26896/1028-6861-2023-89-3-46-56</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-1887</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>ИССЛЕДОВАНИЕ СТРУКТУРЫ И СВОЙСТВ. МЕХАНИКА МАТЕРИАЛОВ: ПРОЧНОСТЬ, РЕСУРС, БЕЗОПАСНОСТЬ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TESTING OF STRUCTURE AND PARAMETERS. MECHANICAL TESTING METHODS</subject></subj-group></article-categories><title-group><article-title>Определение температурной зависимости вязкости разрушения металла толстостенной обечайки с учетом его неоднородности</article-title><trans-title-group xml:lang="en"><trans-title>Determination of the temperature dependence of the fracture toughness of the metal of a thick-walled shell taking into account the inhomogeneity of the material</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>Казанцев</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kazantsev</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Георгиевич Казанцев</p><p>115088, Москва, ул. Шарикоподшипниковская, д. 4</p></bio><bio xml:lang="en"><p>Alexander G. Kazantsev</p><p>115088, Moscow, Sharikopodshipnikovskaya uL, 4</p></bio><email xlink:type="simple">agkazantsev@cniitmash.com</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>Скоробогатых</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Skorobogatykh</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Николаевич Скоробогатых</p><p>115088, Москва, ул. Шарикоподшипниковская, д. 4</p></bio><bio xml:lang="en"><p>Vladimir N. Skorobogatykh</p><p>115088, Moscow, Sharikopodshipnikovskaya uL, 4</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>Погорелов</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pogorelov</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Егор Васильевич Погорелов</p><p>115088, Москва, ул. Шарикоподшипниковская, д. 4</p></bio><bio xml:lang="en"><p>Egor V Pogorelov</p><p>115088, Moscow, Sharikopodshipnikovskaya uL, 4</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>Пиминов</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Piminov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Александрович Пиминов</p><p>142103, Московская обл., г. Подольск, ул. Орджоникидзе, д. 21</p></bio><bio xml:lang="en"><p>Vladimir A. Piminov</p><p>142103, Moscow obl, Podolsk, Ordzhonikidze ul, 21</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Королев</surname><given-names>С. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Korolev</surname><given-names>S. Y.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Юрьевич Королев</p><p>142103, Московская обл., г. Подольск, ул. Орджоникидзе, д. 21</p></bio><bio xml:lang="en"><p>Sergey Yu. Korolev</p><p>142103, Moscow obl, Podolsk, Ordzhonikidze ul, 21</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>НПО «ЦНИИТМАШ»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>NPO "TSNIITMASH"</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ОКБ ГИДРОПРЕСС</institution><country>Россия</country></aff><aff xml:lang="en"><institution>ОКB GIDROPRESS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>23</day><month>03</month><year>2023</year></pub-date><volume>89</volume><issue>3</issue><fpage>46</fpage><lpage>56</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Казанцев А.Г., Скоробогатых В.Н., Погорелов Е.В., Пиминов В.А., Королев С.Ю., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Казанцев А.Г., Скоробогатых В.Н., Погорелов Е.В., Пиминов В.А., Королев С.Ю.</copyright-holder><copyright-holder xml:lang="en">Kazantsev A.G., Skorobogatykh V.N., Pogorelov E.V., Piminov V.A., Korolev S.Y.</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/1887">https://www.zldm.ru/jour/article/view/1887</self-uri><abstract><p>Для основного металла и металла шва типа Сг - Ni - Mo - V (обечайка толщиной 200 мм) приведены оценки референсной температуры Т0 , полученные на основе статистического моделирования методом Монте Карло. Температуру Т0 определяли по стандарту ASTM Е1921 с учетом неоднородности материала. При моделировании Т0 объемы выборок составляли 12, 24 и 70 значений вязкости разрушения KJc. С использованием метода Монте Карло выполнен анализ корректности идентификации металла (однородный/неоднородный). Показано, что выборки по 12 образцов не позволяют надежно определить, является металл однородным или неоднородным — в 50 % случаев для основного металла и 37 % случаев для металла шва получены некорректные результаты. При увеличении выборки до 24 образцов некорректные результаты получены в 5 % случаев. Значения Т0 с учетом неоднородности определяли двумя способами — с применением процедуры скрининга и на основе фактического бимодального представления распределения значений вязкости разрушения, параметры которого находили методом максимального правдоподобия. Показано, что оба способа для основного металла и металла шва дают близкие результаты, величина сдвига Т0 в сторону положительных значений при учете неоднородности составляет около 22 °С. На основе полученных оценок Т0 построены нижние огибающие температурных кривых вязкости разрушения (мастер-кривые для вероятности разрушения 5 %).</p></abstract><trans-abstract xml:lang="en"><p>The estimates of the reference temperature T0, obtained for the base metal and the weld-seam metal of the Cr - Ni - Mo - V type (shell 200 mm thick) on the basis of statistical modeling by the Monte Carlo method are presented. T0 was determined according to the ASTM E1921 standard taking into account the inhomogeneity of the material. The sample size of the fracture toughness values KJC for T0 modeling was 12, 24 and 70. The Monte Carlo method was used for analysis of the correctness of metal identification (homogeneous/inhomogeneous). It is shown that sampling of 12 samples do not provide a reliable determination whether the metal is homogeneous or inhomogeneous (incorrect results were obtained in 50% of cases for the base metal and in 37% of cases for the weld-seam metal). When the sample size increased to 24 samples, the incorrect results were obtained in 5% of cases. The T0 values with allowance for the material inhomogeneity were determined by two ways: using a screening procedure and proceeding from the actual bimodal representation of the fracture toughness distribution (parameters of the bimodal distribution were determined by the maximum likelihood method). It is shown that both methods give close results for the base and weld-seam metal, the magnitude of the shift towards positive values in the average T0 values determined with allowance for the inhomogeneity being about 22°C. Using the obtained T0 estimates, the lower envelopes of the temperature curves of the fracture toughness are constructed (master curves for 5 % failure probability).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>референсная температура Т0</kwd><kwd>вязкость разрушения</kwd><kwd>мастер кривая</kwd><kwd>статистическое моделирование</kwd><kwd>метод Монте Карло</kwd></kwd-group><kwd-group xml:lang="en"><kwd>reference temperature T0</kwd><kwd>fracture toughness</kwd><kwd>master curve</kwd><kwd>statistical modeling</kwd><kwd>the Monte Carlo method</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">Pisarski Н. G., Wallin К. The SINTAP fracture estimation procedure / Eng. Fract. Mech. 2000. Vol. 67. E 613 - 624.</mixed-citation><mixed-citation xml:lang="en">Pisarski Н. G., Wallin К. The SINTAP fracture estimation procedure / Eng. Fract. Mech. 2000. Vol. 67. 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