| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-126: The Occurrence and Disappearance of Serrations at 650°C Temperature in IN718 ODS Superalloy Processed by Powder Metallurgy Route |
| Author(s) |
Suyog Digambar Gaikwad, Vikram Dabhade, SVS Narayana Murty, Sushant Manwatkar |
| On-Site Speaker (Planned) |
Suyog Digambar Gaikwad |
| Abstract Scope |
In the present work, IN718ODS superalloys with varying yttria content (0.3, 0.7 and 1 wt.% yttria) were processed by cryo-milling and powder forging technique. The as-forged and aged alloys with varying yttria contents were characterized in terms of microstructure by XRD, SEM and TEM while tensile properties were determined at room and 650°C temperature. In the as-forged condition the ODS-alloys exhibited enhanced strength with good ductility (AMS5662N) due to the sole effect of the dispersion strengthening while in the aged condition the strength was considerably enhanced but with inadequate ductility (AMS5662N) due to combined effects of the dispersion and precipitation strengthening both at room temperature and at 650oC. The occurrence and disappearance of serrations at 650°C in all as-forged and aged samples were correlated to the volume fraction of dispersoids or precipitates phases, interparticle spacing, size and their capability as an effective sink for C draining theory as deformation progressed. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
High-Temperature Materials, Powder Materials, Mechanical Properties |