| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Mixing Studies for Oxide Dispersion in IN718 ODS Superalloy |
| Author(s) |
Suyog Digambar Gaikwad, Vikram Vasant Dabhade, S.V.S Narayana Murty, Sushant Manwatkar |
| On-Site Speaker (Planned) |
Suyog Digambar Gaikwad |
| Abstract Scope |
Nickel-based oxide dispersion strengthened (ODS) superalloys exhibit excellent tensile, creep, and oxidation resistance at elevated temperatures. The mixing of the oxide dispersoid is a major issue in ODS superalloys. In the present work, IN718+0.3Y2O3ODS superalloy were prepared by three different mixing techniques i.e. high-intensity milling with PCA (Route-A), low intensity mixing in a tumbler without PCA (Route-B) and cryogenic high-intensity milling without PCA (Route-C). The powders prepared by the three routes were forged and heat treated and subsequently characterized for microstructure and mechanical properties. Route-A shows uniform dispersion of oxide particles within the grains and grain boundaries. However, the presence of PCA led to the formation of carbides and oxides, which deteriorated mechanical properties. Cluster of oxide/carbide particles were observed on the grain boundaries in Route-B, which doesn’t contribute to mechanical properties. Route-C exhibits a homogeneous distribution of oxide particles within the grains and grain boundary, which enhanced mechanical properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Powder Materials, Mechanical Properties |