Microstructure and corrosion behaviour of 316 L-IN625 functionally graded materials via laser metal deposition
Source abstract
Abstract
Abstract In this work, the microstructure of gradient regions and the corrosion behaviour of transition interfaces for 316 L -IN625 functional graded materials fabricated using laser metal deposition are investigated. The microstructure in gradient regions along the build direction such as celluar dendrites, columnar grains, coarse dendrites, and nearly equiaxed grains. When the composition of 316 L is less than or equal to 40%, the over passivation zone appears, resulting in the Mixed Cr (III/VI) oxide as the final corrosion products which consists of surviving Cr (III) oxide and generated Cr (VI) oxide. The composition gradient of 316 L -IN625 can effectively improve the corrosion resistance.
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Research context
OpenAlex topics: Metal and Thin Film Mechanics · High-Temperature Coating Behaviors · Additive Manufacturing Materials and Processes
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