| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
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| Presentation Title |
Microstructure Refinement during Hot Rolling of 0.3 CrMoV Steel: Role of Crystallographic Texture |
| Author(s) |
Pravendra Pratap Singh, KS Suresh, M.K. Karthikeyan |
| On-Site Speaker (Planned) |
Pravendra Pratap Singh |
| Abstract Scope |
In this work, we elucidate the role of different texture fibers on grain refinement during unidirectional hot-rolling of 0.3 CrMoV steel. The average grain size reduces drastically with thickness reductions from 60 to 90% due to the combined effects of grain fragmentation and continuous dynamic recrystallization (cDRX) of the ferrite phase. The <110> ǀǀ ND fiber weakens with deformation, while the <111> ǀǀ ND fiber gets more potent. The {111} <110> texture component evolves as the strongest texture whose intensity shows incremental trends with deformation. The texture intensity at the surface is weaker and attains the maximum at the mid-thickness region. The distribution of grain orientation spread remains similar for both RD and ND fibers; however, the grain aspect ratio between them varies significantly. The grains comprised of <110> || RD fiber remain continuous and elongated for larger deformation strain, while the grains belonging to <111> || ND fiber undergo fragmentation and get converted to near equiaxed for similar deformation strain. The origins of such changes will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, |