| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Defects and Properties of Cast Metals
|
| Presentation Title |
Influence of Casting Conditions on Crack Sensitivity of Micro-alloyed Steel Slabs During Continuous Casting |
| Author(s) |
Hossam Shafy, Heinz Palkowski |
| On-Site Speaker (Planned) |
Hossam Shafy |
| Abstract Scope |
Different steel grades are subjected to cracking, taking place in the casting shop or even on the route to hot rolling. One of the causes is their low ductility during slab straightening between 700 °C – 1100 °C which might lead to surface cracking. The presence of titanium and niobium precipitates is believed to influence the hot ductility during unbending. To evaluate the influence of straightening, temperature, secondary cooling and deformation rate on hot ductility, hot tensile testing was performed under varied combinations of the parameters for two steel grades (A: 0.08% C, 0.12% Ti and 0.05% Nb; B: 0.08% C and 0.001% Ti) using TM simulator DIL805T. The effect of thermal cycle and deformation on the precipitates and fracture surface were investigated by means of LOM, SEM and EDX analysis. It could be shown that –under constant secondary cooling conditions- reducing the casting speed is detrimental to hot ductility. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |