Electrometallurgy today, 2017, #3, 19-24 pages
Structure and properties of titanium alloy VT19, produced by the electron beam melting, after thermomechanical treatment
S.V. Akhonin1, A.Yu. Severin1, V.Yu. Belous1, V.A. Berezos1, A.N. Pikulin1, A.G. Erokhin2
E.O. Paton Electric Welding Institute, NASU. 11 Kazimir Malevich Str., 03680, Kiev, Ukraine. E-mail: firstname.lastname@example.org
2SE «SPC» of the E.O.Paton Electric Welding Institute of NASU».
26 Raketnaya str., 03028, Kiev, Ukraine. E-mail: email@example.com
Works were carried out for producing deformed sheet semi-products from 110 mm diameter ingots of high-alloy pseudo ?-titanium alloy VT19 of electron beam melting. After the thermomechanical treatment the alloy microstructure was examined. It was determined that the structure of titanium alloy VT19, produced by the electron beam melting method, consists after rolling of equiaxial polyhedral primary ?-grains, and the intergranular structure is presented by a dispersed ?-phase. It was found that the sheet after thermomechanical treatment has a heterogeneous structure in thickness The rolled sheets of alloy VT19 of electron beam melting show the value of 958 MPa tensile strength at elongation ?s
= 12 % after annealing at 750 o
C temperature. Ref. 9, Tables 3, Figures 7.
Key words: electron beam melting; alloy; thermodeformational treatment; structure; phase; grain; properties
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