| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation-induced Manipulation of Defect Structures and Hierarchical Microstructures
|
| Presentation Title |
A Novel Warm Rolling Induced Microstructure Modification for Evading Strength-Ductility Trade-off in Medium Manganese Steel |
| Author(s) |
Avanish Kumar Chandan, Gyanaranjan Mishra, Kaushal Kishore, Jay Chakraborty |
| On-Site Speaker (Planned) |
Avanish Kumar Chandan |
| Abstract Scope |
In the present work, modification of microstructure via a novel warm rolling (WR) treatment is shown to overcome the strength-ductility trade-off in a medium manganese steel. Controlled generation of dislocations (~1015 m-2) in the constituent austenite and ferrite phases along with introduction of twins in the austenite phase, both induced by WR fetched a 32% improvement in YS as compared to the conventional intercritically annealed (IA) specimen. Additionally, austenite stability regulation via dislocations led to simultaneous improvement in UTS and ductility by 12% and 6%, respectively, as compared to the IA specimen. YS (~952±8 MPa), UTS (~1252±13 MPa) and ductility (~30±3 %) obtained in the warm-rolled specimens was significantly high considering the composition of the steel i.e. without any microalloying. The present study demonstrates an approach to tailor the defect microstructure for escaping the near-ubiquitous strength-ductility paradox in metastable FCC alloys such as stainless steel, HEAs, TWIP steels etc. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Phase Transformations |