Actual Problems in Machine Building 2016 No. 3

Actual Problems in Machine Building. 2016. N 3 Materials Science in Machine Building ____________________________________________________________________ 388 Список литературы 1. Costa L., Vilar R . Laser powder deposition // Rapid Prototyping Journal. – 2009. – Vol. 15 (4). – P. 264–279. 2. Khaing M.W., Fuh J.Y.H., Lu L . Direct metal laser sintering for rapid tooling: Processing and Characterisation of EOS // Journal of Materials Processing Technology. – 2001. – Vol. 113. – P. 269–272. 3. Dindaa G.P., Dasguptaa A.K., Mazumderb J. // Laser Aided Direct Metal Deposition of Inconel 625 Superalloy: Microstructural Evolution and Thermal Stability // Materials Science and Engineering A. – 2009. – Vol. 509. – P. 98–104. 4. Материаловедение и технология металлов: учебник для студентов машиностроительных специальностей вузов / Г.П. Фетисов, М.Г. Карпман, В.М. Матюнин и др.; под ред. Г.П. Фетисова. – 5-е изд., стер. – М.: Высшая школа, 2007. – 862 с. 5. Рашковец М.В., Рябинкина П.А . Особенности структуры материала, полученного прямым лазерным осаждением сплава на основе Ni // Сборник материалов и докладов XVI Международной научно-технической Уральской школы-семинара металловедов – молодых ученых, Екатеринбург, 07–11 декабря 2015 г. – Екатеринбург, 2015. – С. 46–48. FEATURES OF MATERIAL OBTAINED BY DIRECT LASER METHOD DEPOSITION OF Ni BASED ALLOY Rashkovets М. V. 1 , Master’s Degree student, e-mail: lipa_04@mail.ru Nikulina A.A. 1 , Ph.D. (Engineering), Associate Professor, e-mail: a.nikulina@corp.nstu.ru Klimova O. G. 2 , Ph.D. (Engineering), Assistant, e-mail: o.klimova@ltc.ru 1 Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk, 630073, Russian Federation 2 Peter the Great Saint-Petersburg Polytechnic University, 29 Polytechnicheskaya str., Saint- Petersburg, 195251, Russian Federation Abstract At the paper is considered chemical composition and features of structure of samples of Ni-based alloy obtained by direct laser method deposition at the different operating parameters. The range of 250 W to 1500 W of laser power was applied during deposition. Composition of starting powders was obtained by scanning electron microscope. Light microscopy showed the cast structure with transition serial tracks from laser beam. The maximum thickness of samples wall and the maximum track thickness with homogeneous structure were reach at 1500 W. A particles of starting powder were found at the structure at the minimum laser power (250 W). Minimum thickness of the defect- free sample wall was formed with a power of 500 W. Keywords direct laser method deposition, Ni-based alloys, structure