Abstract
Abstract This research work describes the effect of varying frequency of pulsed current gas tungsten arc welding (PCGTAW) on alloy C-276. Investigations were carried out to evaluate the consequence of varying frequency (Hz) on the microstructural and corrosion demeanour of alloy C-276 weldment. Bead-on-weld trials was carried out by varying the frequency from 1 to 10 Hz and keeping other process parameters as constant. The microstructural property of the bead on weld is studied through optical and scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). Corrosion behaviour studies were carried in synthetic seawater condition. Micro-examinationreveals the presence of equiaxed dendritic structure on all the trials of the bead on the weld. The absence of secondary phase was observed through scanning electron microscope (SEM). From the EDS analysis, the absence of micro segregation can be observed for all the weldments. Corrosion rate increase as the frequency (1 to 10 Hz) of the weldment increase. It is inferred from the results that as frequency increase from 1 to 10 Hz, refining of grain takes place with an increase in the corrosion rate
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
