| Abstract Scope |
Micro-alloyed cold rolled steels are widely used in the automotive industry due to their low cost, excellent weldability, and coatability. Typically, these steels have been predominantly used in the yield strength range of 240-420MPa grade. However, to enhance fuel efficiency and reduce the weight of automotive parts, there is a growing demand to increase the strength of micro-alloyed cold rolled steel. In order to increase the strength of micro-alloyed cold rolled steel, it is essential to understand not only the behavior of recrystallization and precipitation during the continuous annealing process, but also the interaction between the initial microstructure and metallurgical phenomena during annealing. To this end, this research investigates the effect of the initial microstructure on the recrystallization and precipitation behavior during the continuous annealing, by analyzing the mechanical properties and microstructure of vanadium micro-alloyed cold rolled steels. |