层流冷却过程中基于自由能理论的相变本构方程的组织预报与分析  

Microstructure Prediction and Analysis of Phase Transformation Constitutive Equations Based on the Theory of Free Energy During the Laminar Cooling

作　　者：段路茜[1] 阳代军[2] 宁林新[2] 林建国[3] 

机构地区：[1]装甲兵工程学院机械工程系,北京100072 [2]首钢技术研究院,北京100043 [3]英国伯明翰大学,伯明翰B152TT

出　　处：《装甲兵工程学院学报》2011年第4期84-87,共4页Journal of Academy of Armored Force Engineering

基　　金：军队科研计划项目

摘　　要：基于自由能理论的统一的相变本构方程可用来预测连续冷却过程中钢材的微观结构和转变体积分数。将该方程镶嵌在商业有限元软件MARC中,对DIN SAE 5140钢在层流冷却过程中的相变过程进行了分析。分析结果与试验数据相吻合。这表明该统一的相变本构方程为预测连续冷却过程中的材料的相变过程提供了一种新的有效方法。During continuous cooling processes,the unified phase transformation constitutive equations based on the theory of free energy are used to predict the microstructure and volume fraction of steel.The unified phase transformation constitutive equations are implemented in the commercial FE software,MARC,to simulate the process of phase transformation during laminar cooling.Good agreements have been obtained between the calculated and experimental microstructure and volume fraction of DIN SAE 5140 steel,which shows it is a new effective method applying the unified phase transformation constitutive equations to predict phase transformation of material during continuous cooling.

关 键 词：连续冷却 相变 统一本构方程 有限元模型 

分 类 号：TG151.2[金属学及工艺—热处理]