The improved galvanic corrosion resistance of a eutectic high entropy alloy through heat treatment
Source abstract
Abstract
Eutectic high entropy alloys (EHEA) are gaining popularity owing to their high strength and ductility and hence they could be used for structural applications. In this work, an AlCoCrFeNi2EHEA was prepared by arc melting and its corrosion behavior was studied at different heat treatment conditions such as annealed at 1100 °C, quenched at 1100 °C, and quenched at 1200 °C. All samples exhibit FCC and BCC phases in different volume fractions. The corrosion behavior of all samples was studied in 3.5 wt% NaCl solution at room temperature. The sample quenched at 1200 °C has shown better corrosion resistance with a corrosion rate of 1.7 × 10–3mm/yr. The better corrosion resistance is ascribed to the order-to-disorder transformation of the B2 phase during heat treatment at 1200 °C and the increased distribution of Al content in the FCC phase which results in the formation of a protective passivation layer.Graphical abstract
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Research context
OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Additive Manufacturing Materials and Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (48)
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