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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">alternative</journal-id><journal-title-group><journal-title xml:lang="ru">Альтернативная энергетика и экология (ISJAEE)</journal-title><trans-title-group xml:lang="en"><trans-title>Alternative Energy and Ecology (ISJAEE)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1608-8298</issn><publisher><publisher-name>Международный издательский дом научной периодики "Спейс</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15518/isjaee.2015.17-18.014</article-id><article-id custom-type="elpub" pub-id-type="custom">alternative-83</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>КОНСТРУКЦИОННЫЕ  МАТЕРИАЛЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>STRUCTURAL MATERIALS</subject></subj-group></article-categories><title-group><article-title>ЗЕРНОГРАНИЧНОЕ ВНУТРЕННЕЕ ТРЕНИЕ В ПОРИСТОМ УЛЬТРАМЕЛКОЗЕРНИСТОМ МАТЕРИАЛЕ</article-title><trans-title-group xml:lang="en"><trans-title>THE GRAIN BOUNDARY INTERNAL FRICTION IN A POROUS ULTRA-FINE GRAINED 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>Кульков</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kul’kov</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р физ.-мат. наук, доцент, зав. кафедрой «Общая физика» ВФ МЭИ</p></bio><bio xml:lang="en"><p>full Ph.D. of physic-mathematical sciences, prof. Head of a Department of General physics, Volzhsky Branch of Moscow Power Engineering Institute.</p></bio><email xlink:type="simple">vfmei@vfmei.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>Кулькова</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kul’kova</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд.  физ.-мат  наук,  доцент  кафедры «Общая  физика»  ВФ  МЭИ</p></bio><bio xml:lang="en"><p>Ph.D. of physic-mathematical sciences, associate professor at the department of General Physics of Volzhsky Branch of Moscow Power Engineering Institute</p></bio><email xlink:type="simple">vfmei@vfmei.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Филиал НИУ «МЭИ» в г. Волжском<country>Россия</country></aff><aff xml:lang="en">Volzhsky Branch of the National Research University «Moscow Power Engineering Institute»<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>10</day><month>11</month><year>2015</year></pub-date><volume>0</volume><issue>17-18</issue><fpage>100</fpage><lpage>104</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Международный издательский дом научной периодики "Спейс, 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Международный издательский дом научной периодики "Спейс</copyright-holder><copyright-holder xml:lang="en">Международный издательский дом научной периодики "Спейс</copyright-holder><license xlink:href="https://www.isjaee.com/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.isjaee.com/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.isjaee.com/jour/article/view/83">https://www.isjaee.com/jour/article/view/83</self-uri><abstract><p>Работа посвящена теоретическим исследованиям структуры материалов с субмикрокристаллическим размером зерна. Предлагается математическая модель внутреннего трения в пористом ультрамелкозернистом материале. Рассматривается диффузионное измерение форм зернограничных пор. Получены выражения для скорости межзеренного проскальзывания, внутреннего трения в форме дебаевского пика и времени релаксации.  </p></abstract><trans-abstract xml:lang="en"><p>This work is devoted to theoretical research of structure materials with submicro size of grain. The mathematical model of internal friction in a porous ultra-fine grained material is suggesting. On this article is considering reshaping the pores by means of the diffusion. There are derived expressions for the speed of intergranular slip, the internal friction in the form of the Debye peak and the relaxation time in this work.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>внутреннее трение</kwd><kwd>пористый материал</kwd><kwd>наноструктурные материалы</kwd><kwd>зернограничное проскальзывание</kwd></kwd-group><kwd-group xml:lang="en"><kwd>internal friction</kwd><kwd>porous material</kwd><kwd>nanostructured materials</kwd><kwd>grain boundary sliding</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">Грязнов М.Ю., Чувильдеев В.Н., Сысоев А.Н., Копылов В.И. Физика сверхпластичности нано- и микрокристаллических материалов // Вестник Ниже-городского университета им. Н.И. Лобачевского. 2010. № 5(2). С. 147-158.</mixed-citation><mixed-citation xml:lang="en">Grâznov M.Û., Čuvil'deev V.N., Sysoev А.N., Kopylov V.I. 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