About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
2020 Technical Division Student Poster Contest
|
Presentation Title |
SPG-36: An Investigation on Internal Oxidation of FeCrAlY Alloys in Selective Laser Melting |
Author(s) |
Saereh Mirzababaei, Milad Ghayoor, Somayeh Pasebani |
On-Site Speaker (Planned) |
Saereh Mirzababaei |
Abstract Scope |
Oxide dispersion strengthened (ODS) FeCrAl alloys are promising candidates for harsh environments due to their high strength and oxidation resistance at elevated temperatures. Conventionally, mechanical alloying of FeCrAl with yttria nanoparticle followed by hot consolidation was used to manufacture ODS FeCrAl alloy. This work aimed to adopt additive manufacturing, in particular, selective laser melting (SLM) to investigate the feasibility of manufacturing ODS FeCrAl alloys via internal oxidation. Such that, FeCrAlY powder was used in presence of the residual oxygen inside the SLM chamber with no additional need for mechanical alloying with yttria nanoparticles. Gas-atomized Fe–24Cr–8Al–0.5Y (wt.%) powder was procured from Orlikon Metco (D50=33μm) and characterized for morphology, powder size, and size distribution. Cylindrical samples were built via SLM using Coherent/OR Creator. The microstructure of fabricated parts was investigated using optical and scanning electron microscopy. Mechanical properties of parts were measured and compared with conventionally manufactured FeCrAly parts. |
Proceedings Inclusion? |
Undecided |