| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization of High-temperature Alloys: Phase Evolution during Manufacturing and Service-induced Deformation
|
| Presentation Title |
Microstructure Evolution and Mechanical Properties of α′/α″-Strengthened Ferritic Superalloys |
| Author(s) |
Christopher H. Zenk, Andreas Bezold, Andreas Förner, Steffen Neumeier, Carolin Körner |
| On-Site Speaker (Planned) |
Christopher H. Zenk |
| Abstract Scope |
High-temperature structural materials based on Fe and Al are highly desirable due to the abundance of these elements and the associated benefits regarding costs and sustainability. By the addition of Ni and Ti to these base elements, ferritic superalloys consisting of an A2 (α-Fe solid solution) matrix and coherently embedded B2-ordered (α′) as well as L21-ordered (α″) strengthening phases can be generated. Our alloy development efforts have led to an LMD-processed eight-component hierarchical precipitate-strengthened alloy with ~50 vol.% precipitate fraction and promising properties. Mechanical properties extracted from high-temperature indentation plastometry and in-situ SEM tensile tests will be presented. A microstructure evolution from a spinodal basket-weave structure to equiaxed precipitates and the formation of Cu-nanoclusters will be discussed on the basis of TEM and APT characterization. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Mechanical Properties, Phase Transformations |