About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Purveyors of Processing Science and ICME: A SMD Symposium to Honor the Many Contributions of Taylan Altan, Wei Tsu Wu, Soo-Ik Oh, and Lee Semiatin
|
| Presentation Title |
Austenite Transformation Behavior during Tensile Deformation of Quenched and Partitioned Steels |
| Author(s) |
Christopher Finfrock, Chandler Becker, Trevor Ballard, Grant Thomas, Amy J. Clarke, Kester D. Clarke |
| On-Site Speaker (Planned) |
Kester D. Clarke |
| Abstract Scope |
Metastable austenite has been shown to significantly enhance strength and ductility combinations in advanced high strength steels by delaying the onset of strain localization. Processes such as Quenching & Partitioning have been developed to both increase retained austenite fraction and stability. Designing steels with higher initial retained austenite fractions and increased total austenite transformation during deformation is pursued to achieve a greater strain hardening rate, which leads to greater resistance to localization and increased strength and ductility. Steels with similar compositions and varying initial austenite fractions were examined to evaluate the correlation between austenite transformation and effective instantaneous strain hardening rate during deformation, and results suggest that neither retained austenite fraction or total austenite transformation during tensile testing correlate with increased strength and ductility combinations. In addition, the effects of strain rate on the uniform and total elongation was investigated for the same steels. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |