Study on intergranular corrosion mechanism of low dilution rate Inconel 625 weld overlay
Source abstract
Abstract
The microstructure evolution and intergranular corrosion (IGC) behavior of Inconel 625 weld overlay with an extremely low (< 0.5 %) Fe content fabricated by cold metal transfer (CMT) at different distance from the substrate had been studied. The results showed that the IGC resistance increased as farther away from the substrate, and this nonuniform performance of weld overlay was an inherent property formed during the evolution of microstructure. Furthermore, a high susceptibility area with the largest penetration depth was found near the interface, which can be attributed to the smaller Inter-dendrite (anode) region aggravating the galvanic corrosion.
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Research context
OpenAlex topics: Welding Techniques and Residual Stresses · Additive Manufacturing Materials and Processes · Hydrogen embrittlement and corrosion behaviors in metals
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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