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This article presents the results of the studies that were conducted by the authors for determining the influence of the cycles of heat treatments on the structure and mechanical properties of dual-phase steel with a low manganese content. For the research in discussion, was used an alloy with 0.094% C and 0.53% Mn which was subjected to several cycles of heat treatments (consisting of full annealing, normalizing, subcritical annealing, full quenching, intercritical quenching). The metallographic analyzes were per...