Effect of Annealing Temperature on Deformed Microstructure of Low Carbon Martensite
In this paper, a new type steel plate with nano-layered martensite lath structure was produced by heavy cold-rolling. After rolling, subsequent annealing has great effect on the deformed martensite morphology and grain refinement. Microstructure recrystallizing course have occurred after long time annealing at 350°C. The recrystallization activation energy is 151 kJmol-1. The ultrafine ferrite grains (average grain size about 317nm), nano-carbides precipitated uniformly were seen in the specimen annealed at 500 °C. Annealing at and above 600 °C resulted in coarse ferrite grains with spheroidized coarse carbides, causing grain growth.
J. Zhao et al., "Effect of Annealing Temperature on Deformed Microstructure of Low Carbon Martensite", Advanced Materials Research, Vol. 213, pp. 143-146, 2011