Open AccessCharacterization of Weld Bead Deposited on Low Carbon Steel Plate with TIG Welding Process
Author(s) -
C. V. Arun Chand,
K. Murali Krishna,
Vara Prasad,
Srinivas Pasupuleti
Publication year - 2020
Publication title -
international journal for research in engineering application and management
Language(s) - English
Resource type - Journals
ISSN - 2454-9150
DOI - 10.35291/2454-9150.2020.0368
Subject(s) - materials science , welding , metallurgy , gas tungsten arc welding , carbon steel , carbide , heat affected zone , composite material , ferrite (magnet) , base metal , grain boundary , arc welding , microstructure , corrosion
The characterization of weld bead deposited on low carbon steel plate with TIG welding is carried out in the present study. Three beads on plate deposits were made on a low carbon steel plate by setting the current at 75, 100 and 125 Amp, voltage at 40 Volt and the weld speed at 0.5 mm/s. The wire is fed at the rate of 2.67 mm/s. A 1.8 mm filler wire made with low carbon steel was used. The macroscopic and microscopic examination of the sample was carried out. The depth of penetration was more with respect to rise in current value for the selected weld speed. At the heat affected zone (HAZ) fine grains were seen, closer to the HAZ recrystalised grains were noted. At the base metal large ferrite grains with fine carbide particles dispersed along the grain boundaries are observed.