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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing >Influence of bainite/martensite-content on the tensile properties of low carbon dual-phase steels
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Influence of bainite/martensite-content on the tensile properties of low carbon dual-phase steels

机译：贝氏体/马氏体含量对低碳双相钢拉伸性能的影响

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摘要

This investigation aims to examine structure-property relations of ferrite-bainite dual-phase (FBDP) steels and to compare these against that of ferrite-martensite dual-phase (FMDP) steels. For this purpose, a series of FBDP and FMDP steels containing wide variation (20-90%) of the harder constituents have been prepared from a low carbon Nb-micro-alloyed base material by suitable heat treatments. Hardness and tensile properties of the developed steels have been examined against the volume fraction of bainite or martensite. The nature of variation of the estimated mechanical properties such as hardness, yield and tensile strength, percentage elongation and strain-hardening exponent with the amount of the harder constituents of the FBDP and FMDP steels exhibits subtle to significant differences. These differences have been explained using the influence of the nature of the microstructural constituents and their mutual interactions. Low carbon FBDP steel with 60-70% bainite appears to possess excellent potential for structural applications.
机译：这项研究旨在检查铁素体-贝氏体双相（FBDP）钢的结构性能关系，并将其与铁素体-马氏体双相（FMDP）钢的结构性能关系进行比较。为此，已经通过适当的热处理由低碳的Nb微合金化基础材料制备了一系列FBDP和FMDP钢，这些钢含有较宽的变化（20-90％）的硬质成分。已针对贝氏体或马氏体的体积分数检查了开发钢的硬度和拉伸性能。估计的机械性能（如硬度，屈服强度和抗拉强度，伸长率百分比和应变硬化指数）随FBDP和FMDP钢中较硬成分的变化而变化的性质表现出细微到显着的差异。这些差异已使用微观结构成分的性质及其相互影响进行了解释。贝氏体含量为60-70％的低碳FBDP钢似乎具有极好的结构应用潜力。

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