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In this study, the significance of intercritical annealing time in governing mechanical properties of lean composition dual-phase steel was investigated. The dual-phase steel was produced by 40% asymmetric cold-rolling followed by intercritical annealing at 860 °C for 1, 5, 10, and 20 min and water-quenching. It was found that in the 860-5 and 860-10 samples, island martensite forms at grain boundaries...