| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Defects and Properties of Cast Metals
|
| Presentation Title |
Influence of Various Cast Defects in Fe-Al-Cr-Zr Intermetallics on the High Temperature Oxidation Behavior |
| Author(s) |
Rene Daniel Putz, Emir Subašić, Alexander Gußfeld, Daniela Zander |
| On-Site Speaker (Planned) |
Rene Daniel Putz |
| Abstract Scope |
Casted Fe-Al type alloys come into consideration as a substitute material for stainless steels and/or nickel-base alloys in corrosive high temperature environments. Iron aluminides are generally characterized with their low density, good wear resistance and outstanding oxidation behavior. Contrary, low ambient ductility and limited strength at high temperatures have both prevented their commercial implementation. Therefore, several alloying concepts are underway for the elimination of the mentioned drawbacks. The high temperature oxidation resistance is a crucial factor for the component’s life time, which is potentially influenced by various cast defects like porosities, agglomerations and surface defects. To understand the influence of cast defects on the oxidation behavior of Fe-Al-Cr-Zr, specimens were exposed to air at 700 °C for multiple hours. Subsequently, the occurred oxidation phenomena were investigated by optical light microscopy (OLM), x-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive x-ray spectrometry (EDX). |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |