20号钢高温时效性能规律研究  

Properties on High temperature Aging of 20 steel

作　　者：潘柏定 潘金平[1] 程宏辉[2] 

机构地区：[1]嘉兴市特种设备检测院 [2]扬州大学机械工程学院

出　　处：《中国特种设备安全》2011年第4期4-9,共6页China Special Equipment Safety

摘　　要：根据现有标准数据分析了20号钢随温度、球化等级的改变,其球状碳化物尺寸大小、抗拉强度、屈服强度、伸长率、断面收缩率、硬度的变化规律,同时建立了相关计算模型,并且预测出球化等级为1.5级、2.5级、3.5级、4.5级所对应的性能参数值。除此还分别给出了依据常温抗拉强度、屈服强度、布氏硬度,以及球状碳化物平均尺寸,判断球化等级的相关计算模型。通过这些模型可以实现计算机对材料力学性能、球化等级的快速自动评判,对锅炉系统的可靠设计、电站寿命及安全评估等具有重要意义。According to the existing standard data, with the variation of temperature and level of spheroidization, the paper analyzed the change laws of spheroidal carbide, tensile strength, yield strength, elongation, reduction of area, hardness of 20 steel. Meanwhile, the models of these variations were constructed and predicted the performance parameters of 1.5, 2.5, 3.5 and 4.5. In addtion, the models of evaluating 20 steel spheroidization classes were constructed according to tensile strength, yield strength, Brinell hardness and the size of spheroidal carbide at room temperature. Computer could calculate the performance parameters and evaluate spheroidization class quickly by these models, which have wider significance for fail-safe design of boiler system, power plant life-span and safety evaluation and so forth.

关 键 词：20号钢 力学性能 球化 寿命评估 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]