Open AccessInfluence of TIG Welding Thermal Cycle on Temperature Distribution and Phase Transformation in Low-cost Titanium Alloy
Author(s) -
S.V. Akhonin,
V.Yu. Belous,
R.V. Selin,
В.А. Костін
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/688/1/012012
Subject(s) - gas tungsten arc welding , welding , materials science , metallurgy , titanium alloy , titanium , alloy , heat affected zone , thermal , phase (matter) , composite material , arc welding , thermodynamics , chemistry , organic chemistry , physics
Low-cost β-phase titanium alloys are starting to get a lot of attention and application in aircraft and mechanical engineering. They are effectively hardened by heat treatment and have a strength 10-20% higher than α-alloys. However, during TIG welding of low-cost titanium alloys, difficulties arise due to a change in the structure and the formation of metastable phases in the welded joint. The main criterion for choosing the modes of TIG welding is the optimal interval of the cooling rate in the weld, therefore it is advisable to compare different modes of TIG welding, including the use of pre-heating, by their thermal effect on the weld metal and the heat-affected zone.