Superalloys 2012 2012
DOI: 10.1002/9781118516430.ch36
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Modeling of the Influence of Oxidation on Thin‐Walled Specimens of Single Crystal Superalloys

Abstract: The microstructural evolution of uncoated single crystal superalloys is modeled taking into account the interplay between oxide growth and substrate response. Experimental investigations demonstrate that γ' fraction of specimens with thicknesses less than 1 mm are strongly affected by oxidation. A model based on thermodynamic and kinetic data only, is presented calculating the growth kinetics of oxide scales and the resulting influence on microstructure evolution of the substrate. The model combines models for… Show more

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“…Cyclic oxidation data for this alloy are reported only at 1100°C [4] and 1150°C [6]. Over these temperatures, gamma prime precipitates volume fraction is too low to ensure good creep The quantification of the oxidation kinetics is important since it allows to predict the depletion of the γ' precipitates and thus the influence of oxidation on the mechanical properties of the part [11][12][13]. The oxidation atmosphere and the growth mechanism of the oxide layer could also influence the creep rate [14].…”
Section: Introductionmentioning
confidence: 99%
“…Cyclic oxidation data for this alloy are reported only at 1100°C [4] and 1150°C [6]. Over these temperatures, gamma prime precipitates volume fraction is too low to ensure good creep The quantification of the oxidation kinetics is important since it allows to predict the depletion of the γ' precipitates and thus the influence of oxidation on the mechanical properties of the part [11][12][13]. The oxidation atmosphere and the growth mechanism of the oxide layer could also influence the creep rate [14].…”
Section: Introductionmentioning
confidence: 99%