The Paton Welding Journal, 2016, №11



2016 №11 (01)

DOI of Article 10.15407/tpwj2016.11.02

2016 №11 (03)

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The Paton Welding Journal, 2016, #11, 9-16 pages
 

Structure and properties of fully-penetrated metal of two-phase titanium alloy with dispersion hardening at AAW

G.M. Grigorenko, S.V. Akhonin, O.M. Zadorozhnyuk and I.N. Klochkov

E.O. Paton Electric Welding Institute, NASU 11 Kazimir Malevich Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua  
Abstract
Tungsten inert gas welding remains the most widespread, relatively easy and versatile method for manufacture of the structures of titanium alloys. Welding can be performed in different spatial positions and equipment can be sufficiently fast readjusted at change of joint type and thickness of metal being welded. Aim of present work lies in study and comparison of a structure and mechanical properties of fully-penetrated metal of high-strength titanium alloys with dispersion hardening and without it, produced using argon-arc method. It is shown that in comparison with titanium alloy VT23 an experimental dispersion-hardened alloy has higher strength indices of fully-penetrated metal, however ductility and impact toughness are extremely low, therefore this type of welding and heat treatment is not recommended for it. 11 Ref., 6 Tables, 16 Figures.
 
Keywords: argon-arc welding, TIG, structure, dispersion hardening, titanium silicides, mechanical properties, heat treatment
 
 
Received:                12.04.16
Published:               14.12.16
 
 
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