TEM investigations of microalloyed steels with Nb, V and Ti after different treatments

The low carbon steel microalloyed with Nb, V, and Ti has been thermomechanically rolled with subsequent accelerated cooling (TM+DIC). This results in a homogeneous fine grain microstructure which leads to high strength and ductility [1]. Additionally a part of this material has been quenched and tempered (TM+DIC+QT).