Waeytens, ManonSyed, Adnan U.Roberts, TraceyDuarte Martinez, FabianGray, SimonNicholls, John R.2023-03-292023-03-292023-03-10Waeytens M, Syed AU, Roberts T, et al., (2023) A microscopy study of nickel-based superalloys performance in type I hot corrosion conditions. Materials at High Temperatures, Volume 40, Issue 4, 2023, pp. 272-2820960-3409https://doi.org/10.1080/09603409.2023.2188355https://dspace.lib.cranfield.ac.uk/handle/1826/19373Alloy 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.enAttribution 4.0 Internationaltype I hot corrosionnickel alloychromiumcorrosion resistancescanning electron microscopeenergy dispersive X-rayArticle