| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
ε-carbide Induced Fresh Martensite to Produce Dual Phase Microstructure in Low Carbon Steel |
| Author(s) |
Won Hui Jo, Cho Hyeon Lee, Seonghyeon Yang, Muhammad Ishtiaq, Tiwari Saurabh, Taehyeong Kim, Junseok Lee, Seong-Tak Oh, Yong-Min Hyun, Jae Wung Bae, Jae Bok Seol |
| On-Site Speaker (Planned) |
Won Hui Jo |
| Abstract Scope |
Dual Phase (DP) steel, characterized by a mixed microstructure of soft ferrite and hard martensite, achieves high strength while maintaining ductility. By controlling the phase ratio of martensite and ferrite, the tensile strength and hardness can be enhanced. It is generally understood that increasing the martensite fraction in DP steel leads to higher strength but reduces ductility. However, achieving high strength while maintaining ductility, despite the increased martensite fraction, would significantly the development of high-performance steels. This study analyzes the relationship between the microstructure and tensile behavior of DP steel. The HCP(Hexagonal Close Packed) structured epsilon carbides at lath boundaries are prone to transform into austenite during intercritical annealing due to the HCP- FCC(Face Centered Cubic) crystal structure similarity. Specifically, it aims to elucidate the tensile deformation behavior concerning the fraction and elemental distribution of fresh martensite formed after quenching from the austenite formed post heat treatment. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Phase Transformations, Mechanical Properties |