淬火钢件冷却速度、显微组织和硬度分布的计算预报  

Prediction of Spatial Distributions of Cooling Rate,Microstructure and Hardness in Steel Components

作　　者：张晓[1] 刘国权[1] 宋月鹏[2] 吴凯[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]山东农业大学机械工程与电子学院,山东泰安271018

出　　处：《钢铁研究学报》2007年第12期49-52,共4页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(50271009)

摘　　要：利用ANSYS有限元软件计算了多种钢端淬试样和圆柱体零件指定部位的冷却速度。分析了合金元素对冷却速度的影响,表明对于一些热物理性能参数值未知的材料,可以用成分相近的钢的对应参数代替来计算其指定部位的冷却速度。进而结合梅尼尔模型预测了零件指定部位的组织和硬度,所得结果与文献中的数据一致,表明此类方法可用于对钢种化学成分和热处理工艺的并行设计优化。The spatial distributions of cooling rate in both the Jominy end quenched samples and cylinder components were calculated by using FEM （finite element method）. The effect of alloying elements on the cooling rate was discussed. It proves that the thermophysical parameters of one steel can be used to calculate the cooling rate in components made of other steels if their chemical compositions are similar. At the same time, the microstructures and hardness in different positions in steel samples were predicted by Maynier＇s model based on the cooling rate calculation, and the accuracy of the method was verified. These methods can be used to design or optimize both the chemical compositions and heat treatment processes of steels.

关 键 词：ANSYS 冷却速度 梅尼尔模型 硬度 

分 类 号：TG142.15[一般工业技术—材料科学与工程]