Effect of Trace Rare-Earth Element Ce on the Microstructure and Properties of Cold-Rolled Medium Manganese Steel

Rare-earth elements have been widely used in the field of functional materials, but their effects on cold-stamping formability high-strength automotive steels rarely studied. In this paper, effect trace rare-earth element Ce microstructure and properties cold-rolled medium manganese steel after ART (austenite-reverted transformation, ART) annealing was The experimental observed using SEM, mechanical were tested a universal tensile testing machine. volume fraction retained austenite texture measured XRD. results showed that original grain size smaller adding Ce. After annealing, distribution with more uniform, comprehensive better. Under conditions quenching at 800 °C for 5 min 645 15 min, maximum product strength elongation 28.47 GPa·%.