Investigation of Titanium Carbide – Metal Binder Composite Powders Treated in a Planetary Ball Mill
G. A. PRIBYTKOV1, A. V. BARANOVSKII1,2, V. V. KORZHOVA1, M. G. KRINITSYN1,2
1Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
2Tomsk Polytechnic University, Tomsk, Russia
Keywords: самораспространяющийся высокотемпературный синтез, карбид титана, металломатричный композит, планетарная мельница, аддитивные технологии, микроструктура, self-propagating high temperature synthesis, titanium carbide, metal matrix composite, planetary ball mill, additive technology, microstructure
Pages: 349-355
Abstract
Metal matrix composite powders based on titanium carbide with titanium and high-speed steel as binders were studied by means of X-ray diffractometry, scanning and transmission electron microscopy. The composite powders were obtained by crushing the cakes formed as the products of self-propagating high-temperature synthesis (SHS) from titanium, carbon (black carbon) and HSS powder mixtures, followed by mechanical treatment in a planetary ball mill Aktivator-2S. It was stated that disintegration rate depends on metal binder content in the SHS product. To obtain the powder suitable for use in additive technologies, SHS powder of titanium carbide was ground preliminarily and then subjected to additional treatment in mixture with Ti powder in the planetary ball mill. As a result, the powder mixture consists of equiaxial granules containing fine TiC particles uniformly distributed in the Ti matrix. Results of the studies of the microstructure of samples obtained by means of selective laser melting (SLM) and electron beam melting (EBM) provide evidence of the advantages of SLM technology over EBM.
DOI: 10.15372/CSD2019150
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