| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Bridging the Precipitation Behaviour and Mechanical Properties of Cu-Ti Modified Quenched and Tempered Steel |
| Author(s) |
Kapil Dev Dev Sharma, Anagh Dutta, Sudipta Patra, Anish Karmakar |
| On-Site Speaker (Planned) |
Kapil Dev Dev Sharma |
| Abstract Scope |
The present study depicted the synergetic effects of Cu and Ti precipitation on the mechanical response of quenched and tempered (Q&T) steels. Homogenized steel blocks were subjected to quenching (920℃) and tempering at 650℃ for different durations (0.25-1hour) to extract the role of precipitation along with matrix softening in final mechanical response. Extensive studies on the evolution of microstructures and precipitates using electron microscopy along with thermodynamic and kinetic simulation revealed the presence of (Ti, Cr)C and Cu-rich precipitates resulting in the variation of hardness and tensile toughness of the steels. An enriched combination of hardness and tensile toughness i.e. 270 VHN and 14600 MJ/m3 respectively has been observed after the tempering of 0.75 hour. The combined effect of grain refinement along with the severe interaction between nano-sized Cu precipitates and dislocations resulted the superior toughness of the steels. Additionally, the increment of hardness came from Ti-rich carbide precipitates. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Characterization, Iron and Steel |