Actual Problems in Machine Building 2016 No. 3

Актуальные проблемы в машиностроении. 2016. №3 Материаловедение в машиностроении ____________________________________________________________________ 445 INFLUENCE OF ELECTRON BEAM TREATMENT REGIMES ON THE FORMING OF Ti-Al SYSTEM CLADS Matts O. E., Student, e-mail: o.matts@mail.ru Munkueva D. D., Student, e-mail: 19darima94@mail.ru Bataev I. A., Ph.D. (Engineering), Associate Professor, e-mail: i.bataev@corp.nstu.ru Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk, 630073, Russian Federation Abstract The structure and the properties of the Ti-Al intermetallic layers, which were fabricated at the surface of titanium alloys by electron-beam cladding was studied by optical microscopy and scanning electron microscopy. The cladding was carried out using non-vacuum electron beam treatment technique. Treatment by the electron beam with a current of 16 mA led to the formation of a two-phase lamellar coating consisted of AlTi and AlTi 3 . Increase of a beam current to 18 mA led to the formation of a single-phase layer, which contained only AlTi 3 . Formation of the intermetallic layers on a surface of cp-Ti led to significant increase of its hardness (up to 480 HV) and wear resistance. The volume of worn material in the samples obtained at the beam current of 16 and 18 mA after 10 minutes of testing was 2.4 and 4.2 mm 3 respectively. Similar values of the worn material were reached after 1 minute of titanium testing. Keywords electron beam, aluminum, titanium alloys, intermetallic compounds Funding This study was supported by RFBR, research project No. 15-38-20776 mol_a_ved.