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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

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In-situ Synchrotron Examination of the Evolution and Transition of Nodular, Compacted and Laminar Graphite During Solidification of Cast Iron
In-situ Tomographic Investigation of Co-base Alloy Solidification Features
Influence of Casting Conditions on Crack Sensitivity of Micro-alloyed Steel Slabs During Continuous Casting
Influence of Composition on the Solidification and Weldability of Cast Austenitic Stainless Steels
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The 3D Correlation of Si Segregation to Nodules Size, Nodules Spatial Distribution and Local Mechanical Strain in Ductile Cast Iron
The Influence of Ultrasound on the Microstructure Formation During the Solidification of A356 Ingots Processed via a 2-Zone Induction Melting Furnace
The Prediction of Solidification Defects: A Multi-defects Modeling
Ti Fading Effect in Primer and Seconder A356 Alloys and Melt Quality

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