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首页> 外文期刊>Journal of Materials Engineering and Performance >Carbide Precipitation Behavior and Wear Resistance of a Novel Roller Steel
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Carbide Precipitation Behavior and Wear Resistance of a Novel Roller Steel

机译：新型辊钢的碳化物析出行为和耐磨性

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摘要

High speed steel, which contains more alloy elements, cannot be used to manufacture the forged work roll. Therefore, a novel roller steel was designed on the basis of W6Mo5Cr4V2 (M2) steel. In this study, the carbide precipitation behavior and wear resistance of the novel roller steel were investigated. The Fe-C isopleths were calculated by Thermo-Calc to determine the carbide types, which were precipitated at different temperatures. The phase transformation temperatures were measured by differential scanning calorimeter and then the characteristic temperatures were designed. The phase structures quenched from the characteristic temperatures were measured by x-ray diffraction and transmission electron microscopy. The typical microstructures were observed by field emission scanning electron microscopy with Energy Disperse Spectroscopy. The hardness and wear resistance of the novel roller steel were measured. The results show that the precipitation temperatures of austenite, MC, M_6C, M_(23)C_6, and ferrite are 1360, 1340, 1230, 926, and 843℃ respectively. When the specimen is quenched from 1300℃, only MC precipitates from the matrix. At 1220℃, MC and M_2C precipitate. At 1150℃, all of MC, M_2C and M_6C precipitate. Relationship between mass fraction of different phases and temperature were also simulated by Thermo-Calc. The hardness of the novel roller steel is a little lower than that of M2 steel, however, the wear resistance of the novel roller steel is a little higher than that of M2 steel with the increase of wear time.
机译：包含更多合金元素的高速钢不能用于制造锻造工作辊。因此，在W6Mo5Cr4V2（M2）钢的基础上设计了一种新型轧辊钢。在这项研究中，研究了新型辊钢的碳化物析出行为和耐磨性。通过Thermo-Calc计算Fe-C的等值线，以确定在不同温度下析出的碳化物类型。通过差示扫描量热仪测量相变温度，然后设计特征温度。通过X射线衍射和透射电子显微镜测量从特征温度淬灭的相结构。通过具有能量分散光谱的场发射扫描电子显微镜观察到典型的微观结构。测量了新型辊钢的硬度和耐磨性。结果表明，奥氏体，MC，M_6C，M_（23）C_6和铁素体的析出温度分别为1360、1340、1230、926和843℃。当样品从1300℃淬火时，只有MC从基质中沉淀出来。在1220℃，MC和M_2C析出。在1150℃，MC，M_2C和M_6C全部析出。还通过Thermo-Calc模拟了不同相的质量分数与温度之间的关系。新型辊钢的硬度略低于M2钢，但是随着磨损时间的增加，新型辊钢的耐磨性略高于M2钢。

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