| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
High Throughput Approaches for Sublattice Alloy Design of High Performance Nitriding Steels |
| Author(s) |
Tadashi Furuhara, Yulin Xie, Goro Miyamoto |
| On-Site Speaker (Planned) |
Tadashi Furuhara |
| Abstract Scope |
Recent advances in high-strength steels for automobile application or surface hardened alloy steels attract research interest on controlling nanoscale dispersion of alloy carbide or nitride in ferrite. In particular, B1-type carbide/nitride precipitation and metastable alloy clustering lead to large precipitation strengthening. This kind of precipitation/clustering can be understood as coupling of nanoscale ordering and compositional phase separation of interstitial alloying elements i and substitutional alloying elements s, i,e, ‘spinodal ordering’ in interstitial and substitutional sublattices.
In this talk, current understanding of i-s clustering and alloy carbide/nitride precipitation is described, which has been revealed via systematic research combining nanoscale characterization, theoretical calculation as well as multiscale evaluation of mechanical properties. Then, perspective of a concept named ‘sublattice alloy design’, is discussed by showing examples of ‘high entropy interstitial alloying’ by low temperature nitriding of austenitic steels via high throughput approaches. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Computational Materials Science & Engineering, Characterization |