Effect of cyclic oxidation on the tensile behavior of a Fe-Cr-Si coated Nb-base alloy
Source abstract
Abstract
Abstract The room temperature tensile properties of Fe-Cr-Si coated C103 alloy are evaluated after cyclic oxidation at 1100–1300 °C for 30–180 min. The strength increased marginally (by 10–20 MPa) after oxidation at 1100 °C, whereas the ductility decreased by ∼50%. Oxidation at 1300 °C for 180 min caused a greater increase in strength (by 10–15%) and deterioration in ductility to 9%. Localized embrittlement of the substrate sub-surface regions in the vicinity of cracks formed in the coating, HfO 2 precipitation at grain boundaries, and intergranular cleavage caused lowering of ductility during cyclic oxidation. Nevertheless, the coating prevented catastrophic oxidation and is indispensable for hypersonic applications.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Intermetallics and Advanced Alloy Properties · High Temperature Alloys and Creep · High-Temperature Coating Behaviors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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