| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Evaluating Strengthening and Impact Toughness Mechanisms for High Strength Ni-Mo Alloyed Thick Plates |
| Author(s) |
Xabier Azpeitia, Nerea Isasti, Eric Detemple, Hardy Mohrbacher, Pello Uranga |
| On-Site Speaker (Planned) |
Pello Uranga |
| Abstract Scope |
Suitable combinations of Mo and Ni in conjunction with advanced thermomechanical processes are required to fulfill the demanding market requirements for heavy gauge high strength quenched and tempered plates. In the current study, plane compression tests were carried out to simulate plate hot rolling conditions and subsequent cooling followed by quenching and tempering treatment. The relationship between the thermomechanical sequence, austenite and final martensite was explored. Quantification of crystallographic unit size and dislocation density was measured by EBSD. Additionally, the interaction between alloy design, processing conditions and tensile-toughness property balance was analyzed. In heavy gauge high strength plates, due to the low reductions applied during roughing, the austenite conditioning and the unit size refinement becomes more limited. Therefore, the risk of the formation of heterogeneous martensitic microstructures and softer bainitic constituents is higher, leading to an impairment of the toughness properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Mechanical Properties, Characterization |