About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Austenite Engineering via Controlled Elemental Partitioning during Reversion |
| Author(s) |
Chuan Tsai, Hung-Wei Yen, Yun-Tzu Lu, Xuan-Tung Chen |
| On-Site Speaker (Planned) |
Chuan Tsai |
| Abstract Scope |
Austenite reversion enables a promising path in development of high performance steels, exhibiting ultrafine retained austenite and tempered martensite. Deformation of reversed austenite produces transformation-induced plasticity (TRIP) effect, enhancing the strain hardening rate and strength-ductility balance of the steel. Therefore, tuning TRIP effect via austenite stability is the critical strategy in the design of high performance steel.
In this study, we report an approach to engineer austenite stability through controlled elemental partitioning in austenite reversion. This approach are applied to austenite reversion in various high-performance steels, such as 9%Ni steel, EN1.4418 martensitic stainless steel, and additively manufactured Corrax maraging steel. In these three cases, we propose one universal principle for austenite reversion, in which elemental partitioning is comprehensively controlled by the reversion temperature, this approach is validated by atom probe characterization. This work provides insights into the design principle of advanced steels with reversed austenite, leading to tailorable mechanical performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Phase Transformations, Mechanical Properties |