New Steel Chemistry Design for TRIP and Dual-Phase Structures

摘要

New automotive steel grade CMnAlSi has been investigated after control rolling for dual phase microstructure. It was also processed to achieve Transformation Induced Plasticity grade by continuous annealing which modeled vertical hot dip galvanizing line. TRIP - microstructure consisted of polygonl ferrite, acicular ferrite, small amounts of bainite and 10/47% of residua austenite which was confirmed by SEM and EDX measurements.