| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering VII
|
| Presentation Title |
High-Temperature Surface Nitridation of 316H Stainless Steel: Formation of Nanolayered Nitride- Metal Composites |
| Author(s) |
Kenneth Cooper, William Patrick Simon II,, Kyle Williams, Anthony Cecchini, Trevor Parker, Lin Shao |
| On-Site Speaker (Planned) |
Kenneth Cooper |
| Abstract Scope |
Surface nitridation is widely used to enhance the wear resistance of stainless steels by forming a nitrogen-expanded austenitic phase (S phase). Typically, higher temperature nitridation is avoided to prevent nitride formation. This study demonstrates that nitridation of 316H stainless steels at elevated temperatures creates unique nanolayered nitride-metal composites. Instead of forming a continuous nitride layer, the nitride phase is embedded, forming nanometer-scale, lamellar-like phase segregations. This structure imparts exceptional high-temperature strength to the alloy. Additionally, the large interface-to-volume ratio in this composition offers unique irradiation resistance, where interfaces act as defect sinks, eliminating potential defects and enhancing the material's overall performance in harsh environments like nuclear reactors. These findings suggest that high-temperature nitridation can be a viable method to improve the mechanical properties and irradiation performance of 316H stainless steels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Nuclear Materials, Nanotechnology |