| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Influence of N and Mn on Performance of Advanced Austenitic Stainless Steels |
| Author(s) |
Guocai Chai |
| On-Site Speaker (Planned) |
Guocai Chai |
| Abstract Scope |
For future sustainable applications, steels with high performance and low cost are demanded. Advanced austenitic stainless steels are a group of austenitic stainless steels with a nickel content near or higher 30 wt% and a pitting resistance equivalent number is near or higher than 40. In this study, N and Mn were added to replace Ni in the advanced austenitic stainless steels. Unexpectedly, a combination high Mn and N can greatly increase both strength and elongation. EBSD and ECCI studies show that this is related to an increase in amount of nano deformation twins in the steels. These phenomena have been explained by the stacking fault energy and the critical stress for deformation twinning evaluated by ab initio simulation. A combination of addition of Mn and N can also increase the critical pitting temperature, CPT. This paper will increase our understanding for the development of high performance and sustainable steels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Mechanical Properties, Characterization |