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首页> 外文期刊>Journal of Materials Science >INFLUENCE OF FERRITE-MARTENSITE MICROSTRUCTURAL MORPHOLOGY ON TENSILE PROPERTIES OF DUAL-PHASE STEEL
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INFLUENCE OF FERRITE-MARTENSITE MICROSTRUCTURAL MORPHOLOGY ON TENSILE PROPERTIES OF DUAL-PHASE STEEL

机译：铁素体-马氏体组织形态对双相钢拉伸性能的影响

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摘要

The influence of ferrite-martensite microstructural morphology, volume fraction of martensite, epitaxial ferrite on the tensile behaviour of dual-phase steels, was studied. It was observed that increasing the martensite content and its aspect ratio raised tensile strength and ductility. Epitaxial ferrite in rolled material strongly reduced the strength and improved the ductility, suggesting that substructure strengthening of material, as well as increased stress transfer to the hard phase, contribute to the strength of thermo-mechanically processed material. Mettallographic analysis of deformed samples revealed that void nucleation occurs predominantly along the ferrite-martensite interface. The void density in the necked region increased towards the fracture surface in all samples and was higher for samples which exhibited localized necking. [References: 13]
机译：研究了铁素体-马氏体组织形态，马氏体体积分数，外延铁素体对双相钢拉伸性能的影响。观察到，增加马氏体含量及其纵横比会提高抗拉强度和延展性。轧制材料中的外延铁素体极大地降低了强度并改善了延展性，表明材料的子结构强化以及向硬相的应力传递增加，有助于热机械加工材料的强度。变形样品的全息分析表明，空核主要发生在铁素体-马氏体界面。在所有样品中，颈缩区域中的空隙密度朝着断裂表面增加，而对于表现出局部颈缩的样品则更高。 [参考：13]

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