Актуальные проблемы в машиностроении. 2016. №3

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Актуальные проблемы в машиностроении. 2016. №3 Материаловедение
в машиностроении
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INFLUENCE OF ELECTRON BEAM TREATMENT REGIMES ON THE FORMING
OF Ti-Al SYSTEM CLADS
Matts O. E., Student, e-mail:
Munkueva D. D., Student, e-mail:
Bataev I. A., Ph.D. (Engineering), Associate Professor, e-mail:
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 AlTi3 . Increase of a beam current to 18 mA
led to the formation of a single-phase layer, which contained only AlTi3. 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 mm3 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.