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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">vestift</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-технических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physical-technical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8358</issn><issn pub-type="epub">2524-244X</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8358-2018-63-2-150-160</article-id><article-id custom-type="elpub" pub-id-type="custom">vestift-374</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, МЕТАЛЛУРГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIALS SCIENCES AND ENGINEERING, METALLURGY</subject></subj-group></article-categories><title-group><article-title>ИССЛЕДОВАНИЕ ХАРАКТЕРИСТИК СПЕЦИАЛЬНЫХ  ПОРОШКОВ И МАТЕРИАЛОВ, ПОЛУЧЕННЫХ МЕТОДОМ СЕЛЕКТИВНОГО  ЛАЗЕРНОГО СПЛАВЛЕНИЯ</article-title><trans-title-group xml:lang="en"><trans-title>INVESTIGATION OF CHARACTERISTICS OF SPECIAL POWDERS AND MATERIALS  PRODUCED BY MEANS OF SELECTIVE LASER MELTING</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>Ильющенко</surname><given-names>А. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Ilyuschanka</surname><given-names>A. Ph.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ильющенко Александр Федорович – член-коррес- пондент Национальной академии наук Беларуси, доктор технических наук, профессор, директор.</p><p>ул. Платонова, 41, 220005, Минск.</p></bio><bio xml:lang="en"><p>Alyaksandr Ph. Ilyuschanka – Corresponding Member of the National Academy of Sciences of Belarus, D. Sc. (Engi- neering), Professor, Director.</p><p>41, Platonov Str., 220005, Minsk.</p></bio><email xlink:type="simple">Alexil@mail.belpak.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт порошковой металлургии Национальной академии наук Беларуси.</institution></aff><aff xml:lang="en"><institution>Powder Metallurgy Institute of the National Academy of Sciences of Belarus.</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>02</day><month>07</month><year>2018</year></pub-date><volume>63</volume><issue>2</issue><fpage>150</fpage><lpage>160</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ильющенко А.Ф., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Ильющенко А.Ф.</copyright-holder><copyright-holder xml:lang="en">Ilyuschanka A.P.</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://vestift.belnauka.by/jour/article/view/374">https://vestift.belnauka.by/jour/article/view/374</self-uri><abstract><p>Приводятся результаты исследования характеристик специальных порошков металлических сплавов и материалов, полученных из этих порошков методом селективного лазерного сплавления (SLM), в том числе данные сравнительного анализа характеристик порошков, изготовленных по технологии VIGA с использованием установки вакуумной индукционной плавки. Отмечается важность проведения комплекса исследований, включающего не только статистическую оценку распределения частиц порошков по размерам (предпочтительно методом дифракции лазерного излучения), но и анализ изображений, который позволяет получать информацию о форме частиц, определяющей текучесть порошков. Показано, что распределение по размерам и фактор формы порошков никелевых жаропрочных сплавов и нержавеющей стали, полученных в Институте порошковой металлургии НАН Беларуси, находятся на уровне лучших зарубежных аналогов. Рассмотрено влияние химического состава порошков на механические свойства образцов, изготовленных методом SLM. Наличие кислорода и нежелательных примесей, как правило, приводит к снижению прочности и относительного удлинения формируемых образцов. Отмечается, что данный метод предоставляет исключительно широкие возможности для формирования сложных геометрических структур с близкой к теоретической плотностью. Последующая термическая или термомеханическая обработка позволяет снимать напряжения, возникающие в процессе SLM, доуплотнять изделия (при необходимости) и регулировать их структуру и свойства. Показана перспективность применения метода дифракции обратно-рассеянных электронов (ДОЭ) для анализа эволюции структуры материалов в процессе SLM и последующей обработки. Отмечается, что изделия, полученные методом SLM из порошков специальных сплавов, демонстрируют механические свойства на уровне, а в ряде случаев превышающие свойства этих сплавов, полученных традиционными и другими аддитивными технологиями.</p></abstract><trans-abstract xml:lang="en"><p>The article presents the results of characterization of special powders of metal alloys and materials produced from these powders by selective laser melting (SLM), including comparative analysis of powders produced using VIGA technology. It is noted the importance of a complex study that includes not only a statistical evaluation of particle size distribution of the powders (preferably, by the method of laser diffraction), but also image analysis providing information on the particles’ shape influencing the powders’ flowability. It is shown that the size distribution and shape metrics for nickel refractory alloys and stainless steel powders obtained at the Powder Metallurgy Institute of the National Academy of Sciences of Belarus are at the level of the best foreign analogues. The influence of powder chemical composition on the mechanical properties of SLM samples is considered. The presence of oxygen and undesirable impurities, as a rule, decreases the strength and tensile strain. It is noted that SLM provides extremely wide opportunities for the formation of complex geometric structures with close to full density. Subsequent thermal or thermal and mechanical processing allows reduction of stresses arising during the SLM, densification of products (if necessary) and regulation of their structure and properties. The prospects of applying the backscattered electron diffraction (EBSD) for analysis of the material structure evolution during SLM and subsequent processing are shown. It is noted that products obtained by the SLM from the powders of special alloys exhibit mechanical properties at a level, and in some cases even exceeding the properties of these alloys produced by traditional and other additive technologies.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>специальные порошки</kwd><kwd>аддитивные технологии</kwd><kwd>текучесть порошков</kwd><kwd>селективное лазерное сплавление</kwd></kwd-group><kwd-group xml:lang="en"><kwd>special powders</kwd><kwd>additive technologies</kwd><kwd>flow rate of powder</kwd><kwd>selective laser melting</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">Ильющенко, А. Ф. Современное состояние порошковой металлургии в Западной Европе: тенденции и перспективы / А. Ф. Ильющенко, В. В. 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