DESIGN OF DUPLEX LOW CARBON STEELS FOR IMPROVED STRENGTH: WEIGHT APPLICATIONS
DESIGN OF DUPLEX LOW CARBON STEELS FOR IMPROVED STRENGTH: WEIGHT APPLICATIONS
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设计双相低碳钢以提高强度：重量应用
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
J. Koo
中科院分区：
文献类型：
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作者：
J. Koo
为了获得理想的显微组织特征，进而获得理想的力学性能，对双相铁素体-马氏体（DFM）钢的力学性能改进设计原则进行了评价。根据设计准则研制了成分为Fe/2%Si/0.1%C的DFM合金。这种2%Si的DFM钢显示出高强度和良好的成形性，并且其拉伸性能上级一系列含Cr和Mn的DFM钢，以及包括货车80在内的一些选择性商业HSLA钢。在15%至80%马氏体的范围内，两相混合物的“复合”规则似乎是研究的双相系统的拉伸行为的一个相当好的近似。还提出了单个组分的性质变化的影响，以及双重结构-性质关系。
Design principles for improved mechanical properties of Duplex Ferrite-Martensite (DFM) steels have been evaluated in order to obtain desirable microstructural characteristics which in turn result in desirable mechanical properties. A DFM alloy, of composition Fe/2 percent Si/0.1 percent C, has been developed according to the design criteria. This 2 percent Si DFM steel showed high strength and good formability, and its tensile properties are superior to a series of Cr and Mn containing DFM steels, and to some selective commercial HSLA steels including Van 80. Over the range of 15 to 80 percent martensite the 'composite' rule for two phase mixtures appears to hold as a fairly good approximation of the tensile behavior of the duplex systems investigated. The effect of the property variations of the individual constituents, and duplex structure-property relations are also presented.