2016 №01 (05) DOI of Article
2016 №01 (07)

Automatic Welding 2016 #01
Avtomaticheskaya Svarka (Automatic Welding), #1, 2016, pp. 42-46
Influence of filler metal on structure and properties of welded joints of high-strength two-phase titanium alloys produced using argon arc welding

S.V. Akhonin, V.Yu. Belous, I.K. Petrichenko And R.V. Selin
E.O. Paton Electric Welding Institute, NASU 11 Kazimir Malevich Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
The welded joints of high-strength titanium alloys, produced using arc welding, have, as a rule, unsatisfactory values of mechanical properties, especially those of ductility in the as-welded state as compared to the base metal. In the work the effect of thermal welding cycle, type of filler metal and the post-weld heat treatment on the structure and properties of welded joints of two-phase high-alloyed titanium alloys having st > 1000 MPa, were evaluated. The properties and structure of welded joints of high-strength titanium alloys VT23, T110 and experimental alloy Ti–6.5A1–3Mo–2.5V–4Nb–1Cr–1Fe–2.5Zr, made by argon arc welding applying the filler wires, differing by their composition from the base metal, were studied. It is rational to produce the joints of complex-alloyed titanium alloy Ti–6.5A1–3Mo–2.5V–4Nb–1Cr–1Fe–2.5Zr using argon arc welding applying filler wire VT1-00sv at modes, providing the through penetration and the content of wire components in the weld metal at level of 10 % in combination with the subsequent high-temperature annealing. 6 Ref., 1 Table, 6 Figures.
Keywords: titanium alloys, argon arc welding, filler wire, properties, structure
Received:                13.10.15
Published:               15.03.16
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