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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">10.26896/1028-6861-2020-86-9-37-44</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-1277</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. ФИЗИЧЕСКИЕ МЕТОДЫ ИССЛЕДОВАНИЯ И КОНТРОЛЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TESTING OF STRUCTURE AND PARAMETERS. PHYSICAL METHODS OF TESTING AND QUALITY CONTROL</subject></subj-group></article-categories><title-group><article-title>Восстановление функции распределения ориентировок из прямых полюсных фигур с помощью суперпозиции нормальных распределений и произвольно определенных ячеек (сравнительный анализ)</article-title><trans-title-group xml:lang="en"><trans-title>Restoration of the orientation distribution functions from direct polar figures using superposition of normal distributions and arbitrarily defined cells (comparative analysis)</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>Серебряный</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Serebryany</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Нинелович Серебряный</p><p>119334, Москва, Ленинский пр., д. 49</p></bio><bio xml:lang="en"><p>Vladimir N. Serebryany</p><p>49, Leninsky pr., Moscow, 119334</p></bio><email xlink:type="simple">vns@imet.ac.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>Колянова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolyanova</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александра Сергеевна Колянова</p><p>119334, Москва, Ленинский пр., д. 49</p></bio><bio xml:lang="en"><p>Aleksandra S. Kolyanova</p><p>49, Leninsky pr., Moscow, 119334</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт металлургии и материаловедения имени А.А. Байкова, РАН (ИМЕТ РАН)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (IMET RAS)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>13</day><month>09</month><year>2020</year></pub-date><volume>86</volume><issue>9</issue><fpage>37</fpage><lpage>44</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Серебряный В.Н., Колянова А.С., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Серебряный В.Н., Колянова А.С.</copyright-holder><copyright-holder xml:lang="en">Serebryany V.N., Kolyanova A.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://www.zldm.ru/jour/article/view/1277">https://www.zldm.ru/jour/article/view/1277</self-uri><abstract><p>В работе представлены результаты сравнительного исследования функций распределения ориентировок (ФРО), рассчитанных из прямых полюсных фигур (ППФ) с помощью суперпозиции большого числа положительных стандартных гауссовских нормальных распределений с одинаковым рассеянием (программа Texxor) и метода произвольно определенных ячеек (ADC-метода) (программа LaboTex). Сравнение осуществляли для эталонной ориентировки Santa Fee (в качестве экспериментальных ППФ применяли рассчитанные ранее полные ППФ) и измеренных неполных ППФ, характеризующих текстуры рекристаллизации алюминиевого сплава 6016 с высокой степенью остроты. В качестве критерия оценки погрешностей вычислений по обеим программам использовали RP-фактор — усредненные по каждой и всем измеряемым ППФ разности интенсивностей экспериментальной и расчетной ППФ, отнесенные к соответствующим экспериментальным значениям на полюсной фигуре. Установили, что RP(0,5)-факто ≥р (нормированные интенсивности, используемые при расчете, 0,5) для Santa Fee составляет 0,3 (Texxor) и 2,6 % (LaboTex). При этом максимальные значения ориентационной плотности ФРО отличаются незначительно (5,1 и 4,5). Однако для измеренных неполных ППФ текстуры рекристаллизации алюминиевого сплава они различаются существенно (61,8 и 95,9), а RP(0,5)-фактор возрастает до 12,6 и 30,5 % соответственно. Поскольку в случае метода суперпозиции нормальных распределений RP(0,5)-фактор меньше, чем при ADC-методе, восстановление ФРО с использованием программы Texxor предпочтительнее по сравнению с LaboTex.</p></abstract><trans-abstract xml:lang="en"><p>A comparative study of orientation distribution functions (ODF) calculated from direct pole figures (DPF) is carried out using a superposition of a large number of positive standard Gaussian normal distributions with the same scattering (Texxor program) and the method of arbitrary defined cells (ADC) (LaboTex program) to identify the advantages and shortcomings of each method. The comparison was carried out for the Santa Fee reference orientation (the previously calculated total PPF were used as the experimental PPF) and the measured incomplete PPF characterizing the recrystallization textures of 6016 aluminum alloy with a high degree of sharpness. The RP-factor was used as a criterion for evaluating the calculation errors for both programs: the difference between the intensities of the experimental and calculated PPFs averaged over each and all measured PPFs and referred to the corresponding experimental values on the pole figure. The values of the RP-factors depend on the method of the ODF reconstructing and the experimental errors of the measured pole figures of the materials under study. It is shown that the values of RP(0.5)-factor (normalized intensities used in the calculation, ≥0.5) for Santa Fee are 0.3 (Texxor) and 2.6 % (LaboTex) and the corresponding maximum values of the orientational density of ODF differ insignificantly (5.1 and 4.5, respectively). However, for measured incomplete PPF of the recrystallization texture of the aluminum alloy, they differ significantly (61.8 and 95.9), and the RP(0.5)-factor increases to 12.6 and 30.5%, respectively. Since the method of superposition of normal distributions provides a lower value of the RP(0.5)-factor compared to the ADC method, the ODF reconstruction using the Texxor program is preferable compared to LaboTex.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>текстура</kwd><kwd>прямая полюсная фигура</kwd><kwd>функция распределения ориентировок</kwd><kwd>метод суперпозиции нормальных распределений</kwd><kwd>программы Texxor и LaboTex</kwd><kwd>ADC-метод</kwd></kwd-group><kwd-group xml:lang="en"><kwd>texture</kwd><kwd>direct pole figure</kwd><kwd>orientation distribution function</kwd><kwd>superposition of normal distributions</kwd><kwd>Texxor and LaboTex software</kwd><kwd>ADC method</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена по государственному заданию № 075-00947-20-00. Авторы выражают благодарность О. А. Крымской (национальный исследовательский ядерный университет «МИФИ», кафедра физических проблем материаловедения) за проведение расчетов ADC-методом по программе LaboTex</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">Pawlik K. Determination of the Orientation Distribution Function from Pole Figures in Arbitrarily Defined Cells / Phys. Stat. Sol. (b). 1986. Vol. 134. P. 477 – 483.</mixed-citation><mixed-citation xml:lang="en">Pawlik K. Determination of the Orientation Distribution Function from Pole Figures in Arbitrarily Defined Cells / Phys. Stat. Sol. (b). 1986. Vol. 134. P. 477 – 483.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Pawlik K., Pospiech J., Lucke K. 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