|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Defects and Properties of Cast Metals
||Effect of Continuous Casting Processing Parameters on the Hot Ductility of Micro-alloyed Steels
||Hossam Ibrahim, Mohamed Soliman, Heinz Palkowski
|On-Site Speaker (Planned)
Different grades of continuously cast steel slabs are prone to cracking, taking place in the casting shop or even on the route to hot rolling. Low ductility during straightening at a temperature range between 700 °C – 1100 °C is one of the reasons. This effect is believed to be due to the presence of titanium and niobium precipitates at higher temperature ranges and a low percentage of formed ferrite during unbending at lower temperatures. The hot ductility behaviour of steel with 0.08% C, 0.12% Ti and 0.045% Nb was investigated by hot tensile testing using a thermo-mechanical simulator to draw a ductility map for the selected alloy. Ferrite formation was studied to define the Ar3 temperature. The amounts and variation of carbides and nitrides were modelled by ThermoCalc software and investigated by microstructural analysis by SEM. It is shown that increasing the strain rates is beneficial to hot ductility.
||Planned: Supplemental Proceedings volume