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Article Dans Une Revue Materials at High Temperatures Année : 2023

A microscopy study of nickel-based superalloys performance in type I hot corrosion conditions

Résumé

Alloy material selection for sustainable, efficient, and cost-effective use in components is a key requirement for both power generation and aerospace sectors. Superalloys are manufactured using a combination of different elements, selected carefully to balance mechanical performance and environmental resistance to be used in a variety of different service conditions. Therefore, a fundamental understanding of each element is critical to alloy design. In this paper, the interaction of alloy chemistry, particularly chromium as a corrosion-resistant element along with titanium and molybdenum, and their effect on alloys performance for the relevant gas turbine industries were discussed. Based on the findings, the single-crystal alloy is found to be a better corrosion resistant alloy exhibited higher corrosion resistance in comparison to polycrystal alloys and proved that microstructure has a significant impact on alloy performance. This study also established that molybdenum level in chromia former alloys can significantly enhance the corrosion damage.
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hal-04026361 , version 1 (13-03-2023)

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Manon Waeytens, Adnan. Syed, Tracey Roberts, Fabian Duarte Martinez, Simon Gray, et al.. A microscopy study of nickel-based superalloys performance in type I hot corrosion conditions. Materials at High Temperatures, 2023, 40 (4), pp.272-282. ⟨10.1080/09603409.2023.2188355⟩. ⟨hal-04026361⟩
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