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Fe-C-Mn系双相钢具有优良的综合力学性能和成形工艺性能,其原因在于它具有艮好的双相结构。占一定百分含量的马氏体(强化相)使之具有相应高的强度级别,而基底铁素体则保证具有优良的塑性。本文就0.04～0.1%C、2%Mn双相钢经一系列“临界加热”处理后的铁素体与马氏体形态、分布、亚结构以及两相界面微区化学成分进行了综合观察和分析,初步揭示了组织和性能的关系。
Fe-C-Mn dual phase steel has excellent mechanical properties and forming process performance, the reason is that it has a good dual-phase structure. A certain percentage of martensite (strengthening phase) gives it a correspondingly high strength level, while the base ferrite ensures good ductility. In this paper, the morphology, distribution, substructure and chemical composition of two-phase interfacial micro-domains of 0.04 ~ 0.1% C, 2% Mn dual phase steel after a series of “critical heating” Observation and analysis, preliminary revealed the relationship between organization and performance.