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논문 기본 정보

자료유형
학술저널
저자정보
M. Palpandi (PSNA College of Engineering and Technology) G. Magudeeswaran (PSNA College of Engineering and Technology)
저널정보
한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제22권 제5호
발행연도
2021.10
수록면
527 - 537 (11page)
DOI
10.36410/jcpr.2021.22.5.527

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The present work involves the flux cored arc welding of a duplex stainless steel joint and the investigating for influences ofthe input welding transfer modes on the joint. The aim of this investigation is to identify the best input welding transfer modeand conditions to obtain a homogenous grain structure and defect free joint. The investigation incorporates experimentalwelding of the duplex stainless steel joint under constant current, pulsed current and surface tension transfer modes on thewelding specimens. Subsequently the analyses of metallurgical characteristics and mechanical properties of the specimen wereperformed. Optical microscopy was utilized to characterize the weld metal identify grain boundaries, phase boundaries,inclusion distribution present in the specimen layer. The analysis revealed the microstructure of the weld region showingrelative uniformity in the surface tension transfer mode in comparison to the constant current and pulsed current modes inthe present investigation. The scanning electron micrograph with field emission analysis was utilized for investigating thepresence of austenite and ferrite in the welded specimen. The results revealed sparsely distributed ferrite in the weld specimenwith surface tension transfer mode when compared to specimens welded under constant and pulsed current mode resultingin higher concentration of austenite in the weld zone. Energy-dispersive X-ray analysis was performed to identify the elementcomposition in the weld specimen. The surface tension transfer mode weld specimen exhibited similar composition of ferriteas with as specimens of constant and pulsed current mode. The X-ray diffraction analysis was performed to identify theelement-chemical composition in the weld zone of the weld specimens. Electron back scatter diffraction analysis was made todiscriminate the dissimilar phases by means of equating the inter-planar angles taken from the pattern of diffraction. Theresults obtained in terms of grain size and associated mechanical strength of the specimens, surface tension transfer modeyields better results.

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