The Future of Alumina-Forming Alloys: Challenges and Applications for Power Generation

Bruce A. Pint

doi:10.4028/www.scientific.net/MSF.696.57

Paper Titles

Void Formation at the Interface of the Duplex Scale Formed on Fe-5Cr Alloy at 773 K
p.34

The Reactive Element Effect – Past, Present and Future
p.39

Dissociative Adsorption of Carbonaceous Gases on Ni Containing Representative Elements
p.45

Discussions on some Properties of Alumina Scales and their Protectiveness
p.51

The Future of Alumina-Forming Alloys: Challenges and Applications for Power Generation
p.57

In Situ Measurement of the Phase Transformation Behavior of Al₂O₃ Scale during High-Temperature Oxidation using Synchrotron Radiation
p.63

The early Stages of the Scale Growth on FeCrAl(+RE)-Type Alumina Formers
p.70

Thermodynamic Stability and Reaction Sequence for High Temperature Oxidation Processes in Steels
p.76

Modeling Internal Oxidation of Binary Ni Alloys
p.82

HomeMaterials Science ForumMaterials Science Forum Vol. 696The Future of Alumina-Forming Alloys: Challenges...

The Future of Alumina-Forming Alloys: Challenges and Applications for Power Generation

Abstract:

Alumina-forming alloys have been studied for over 50 years and are now needed for high efficiency power generation applications operating at higher temperatures. Especially in the presence of water vapor, alumina-forming alloys outperform conventional chromia-forming alloys above 1000°C. However, alloy mechanical behavior is a significant issue and alumina-forming alloy development has been limited. The opportunity for alloy development is discussed as well as thefactors that limit oxidation resistance, including alloy thermal expansion and optimizing reactive element additions. Finally, lifetime modeling is discussed for thick section components together with the need to address performance in more complex environments.