Microstructure and properties of a dissimilar weld between alloy 617 and A387 steel using different filler metals

Microstructure and properties of a dissimilar weld between alloy 617 and A387 steel using... In this study, microstructural and mechanical properties of a (butt) weld, joining two base metal alloys 617 and A387-Gr.11 steel, were investigated. Fusion welding was performed using gas tungsten arc welding. Three different filler metals of ERNiCrMoCo-1, ERNiCr- 3, and ER309L were used to perform welding. Microstructural analysis was conducted with optical and scanning electron microscopes. Microstructural observations revealed that the extent of carbon migration and martensite phase formation in the transition zone is reduced by using filler metals of higher Ni content. For the ERNiCrMoCo-1 filler metal, unmixed zone in alloy 617 base metal side was eliminated. Microhardness, impact, and tensile tests were carried out to determine the mechanical properties of the dissimilar metal welds (DMWs). The welds made by using ERNiCrMoCo-1 filler metal resulted in highest hardness and impact energy, whereas ERNiCr-3 filler metal weld displayed the highest tensile strength, yieldstrength,andelongationincomparisonwithother fillers.Based on the results, the ERNiCrMoCo-1 filler metal was found to be the best filler metal choice for the DMWs of these two base metals. . . . . Keywords Alloy 617 A387-Gr.11 steel Dissimilar metal weld Microstructural properties Filler metal Recommended for publication by Commission II - Arc welding and Filler Metals Highlights � Dissimilar http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Welding in the World Springer Journals

Microstructure and properties of a dissimilar weld between alloy 617 and A387 steel using different filler metals

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2018 by International Institute of Welding
Subject
Materials Science; Metallic Materials; Continuum Mechanics and Mechanics of Materials; Theoretical and Applied Mechanics
ISSN
0043-2288
eISSN
1878-6669
D.O.I.
10.1007/s40194-018-0610-x
Publisher site
See Article on Publisher Site

Abstract

In this study, microstructural and mechanical properties of a (butt) weld, joining two base metal alloys 617 and A387-Gr.11 steel, were investigated. Fusion welding was performed using gas tungsten arc welding. Three different filler metals of ERNiCrMoCo-1, ERNiCr- 3, and ER309L were used to perform welding. Microstructural analysis was conducted with optical and scanning electron microscopes. Microstructural observations revealed that the extent of carbon migration and martensite phase formation in the transition zone is reduced by using filler metals of higher Ni content. For the ERNiCrMoCo-1 filler metal, unmixed zone in alloy 617 base metal side was eliminated. Microhardness, impact, and tensile tests were carried out to determine the mechanical properties of the dissimilar metal welds (DMWs). The welds made by using ERNiCrMoCo-1 filler metal resulted in highest hardness and impact energy, whereas ERNiCr-3 filler metal weld displayed the highest tensile strength, yieldstrength,andelongationincomparisonwithother fillers.Based on the results, the ERNiCrMoCo-1 filler metal was found to be the best filler metal choice for the DMWs of these two base metals. . . . . Keywords Alloy 617 A387-Gr.11 steel Dissimilar metal weld Microstructural properties Filler metal Recommended for publication by Commission II - Arc welding and Filler Metals Highlights � Dissimilar

Journal

Welding in the WorldSpringer Journals

Published: Jun 6, 2018

References

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