Actual Problems in Machine Building 2018 Vol. 5 No. 3-4

Actual Problems in Machine Building. Vol. 5. N 3-4. 2018 Materials Science in Machine Building ____________________________________________________________________ 124 MANUFACTUREAD OF THE HEAT-RESISTANT NICKEL ALLOY BY ADDITIVE TECHNOLOGY OF HIGH-SPEED DIRECT LASER DEPOSITION Rashkovets М. V., Ph.D. student, e-mail: lipa_04@mail.ru Nikulina A.A. , K.Sc. (Engineering), Associate Professor, e-mail: a.nikulina@corp.nstu.ru Lyapunova A.A., Мaster’s degree student, e-mail: annlyapunova@mail.ru Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk, 630073, Russian Federation Abstract The paper presents the results of structure investigation of the as-deposited samples from a high- temperature nickel-based alloy obtained by high-speed direct laser deposition with different laser power parameters. The structure has a predominantly dendritic structure, with the exception of the as-deposited sample manufactured with the minimum laser power of 450 W. There is a significant difference in structure between 450 W and 600 W. The boundaries between neighboring layers were observed in all the as-deposited samples. The hardness of the layers increases with increasing the laser power. Keywords structure, high-speed direct laser deposition, Ni-based alloys, heat resistance Ni-based alloy