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  1. No Access

    Article

    Phase Transformations in Co-Ni-Cr-W Alloys During High Temperature Exposure to Steam Environment

    Three model alloys, Co-10Ni-20Cr-15W, Co-30Ni-20Cr-15W and Ni-20Cr-15W (all in wt.%) were investigated in Ar-50%H2O at 700 and 750 °C for up to 3000 h reaction. The results showed the formation of thin chromia sc...

    J. Zhang, L. Garcia-Fresnillo, A. Jalowicka… in Journal of Phase Equilibria and Diffusion (2018)

  2. No Access

    Article

    Predicting Oxidation-Limited Lifetime of Thin-Walled Components of NiCrW Alloy 230

    Using alloy 230 as an example, a generalized oxidation lifetime model for chromia-forming Ni-base wrought alloys is proposed, which captures the most important damaging oxidation effects relevant for component...

    R. Duan, A. Jalowicka, K. Unocic, B. A. Pint, P. Huczkowski… in Oxidation of Metals (2017)

  3. No Access

    Article

    Effect of SO2 Addition on Air Oxidation Behavior of CM247 and CMSX-4 at 1050°C

    In the present work, the oxidation behavior of two commercial Ni-base superalloys, CMSX-4 and CM247, in synthetic air with and without 2 vol.% SO2 at 1050°C has been studied. The corrosion reactions in the presen...

    A. Jalowicka, W. J. Nowak, D. Naumenko, W. J. Quadakkers in JOM (2016)

  4. No Access

    Article

    Effect of Specimen Thickness on Microstructural Changes During Oxidation of the NiCrW Alloy 230 at 950–1050°C

    An accurate procedure for predicting oxidation-induced damage and lifetime limits is crucial for the reliable operation of high-temperature metallic components in practical applications. In order to develop a ...

    A. Jalowicka, R. Duan, P. Huczkowski, A. Chyrkin, D. Grüner, B. A. Pint… in JOM (2015)

  5. No Access

    Article

    Boron Depletion in a Nickel Base Superalloy Induced by High Temperature Oxidation

    The conventionally cast Ni-base superalloy Rene 80 containing 90 wt ppm boron was oxidized in synthetic air at 850–1,050 °C for times up to 100 h. Extensive microstructural studies using GD-OES and SEM/WDX/EBS...

    A. Jalowicka, W. Nowak, D. J. Young, V. Nischwitz, D. Naumenko… in Oxidation of Metals (2015)