Article ID Journal Published Year Pages File Type
11007170 Journal of Manufacturing Processes 2018 13 Pages PDF
Abstract
The joining of Inconel 600 and AISI 316L plates using compound flux of 50% SiO2 + 50% TiO2 by activated tungsten inert gas (ATIG) welding process has been addressed in this article. The various mechanical and metallurgical studies were performed on the un-peened ATIG (UP-ATIG) dissimilar weldment. The results portrayed that the tensile failure of UP-ATIG weldment had occurred at the weld zone because of the presence of coarse grains and intermetallic phases. Laser shock peening (LSP) carried out on the UP-ATIG dissimilar weldment divulged that the laser peened ATIG (LP-ATIG) weldment possesses higher tensile strength (630.33 ± 28.02 MPa) than the UP-ATIG weldment (573.11 ± 41.11 MPa) due to the presence of compressive residual (CR) stresses induced by LSP. The residual stress measurements revealed that the UP-ATIG weldment possesses tensile residual (TR) stresses and the LP-ATIG weldment encompasses CR stresses in the weld zone. Potentiodynamic polarization test results show that the corrosion resistance of the LP-ATIG weldment is slightly higher (Icorr = 0.19 ± 0.02 mA/cm2) than the UP-ATIG weldment (Icorr = 0.21 ± 0.05 mA/cm2).
Related Topics
Physical Sciences and Engineering Engineering Industrial and Manufacturing Engineering
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