The continuous annealing simulator was used to investigate the influences of heating rate,intercritical annealing temperature and over-aging temperature during continuous annealing process on microstructure and mechanical properties of DP980.The research results show that to increase heating rate can refine martensite grain and is benefit to remove banded structure,and better strength and plasticity can be obtained when heating rate is45 ℃/s.The intercritical annealing temperature determines the volume frac...
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