Open AccessMechanical, Metallurgical and Corrosion Properties of Dual Pulsed, Pulsed Gas and Shielded Metal Arc Welded AISI 310 Austenitic Stainless Steel
Author(s) -
M. Arunkumar,
Sudhy S. Panicker,
Pushpendra Kumar,
K. Devakumaran
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1132/1/012028
Subject(s) - materials science , shielded metal arc welding , metallurgy , gas metal arc welding , welding , austenitic stainless steel , corrosion , gas tungsten arc welding , ultimate tensile strength , heat affected zone , shielding gas , base metal , arc welding , composite material
AISI 310 is a highly alloyed austenitic stainless steel used for high-temperature applications. The high chromium and nickel contents give this steel excellent oxidation resistance as well as high strength. In the present work, the material was welded using shielded metal arc welding (SMAW), Pulsed Gas Metal Arc welding (P-GMAW) and Double Pulsed Gas Metal Arc welding (DP-GMAW). A comparative study has been carried out on the basis of chemical, mechanical, metallurgical and corrosion properties of base metal and all other welded samples. SMAW process has high heat input and hence dilution effect is more prominent in this process. The mechanical properties evaluated in terms of maximum tensile strength, impact energy and hardness was obtained for DP-GMAW sample. This superior mechanical behaviour of DP-GMA welded sample was attributed to the better grain refinement occurred due to double pulsation effect. However, the DP-GMAW process showed highest corrosion rate when compared to other two welded samples.