一种新型材料淬火过程的数值模拟和实验研究

Numerical simulation and experimental study of a new material during its quenching process

一种新型摩托车制动盘专用材料B410DB的淬火工艺目前仍采用人工经验和小批量试制的方法,针对这一现状,对该新型材料的淬火过程进行了数值模拟、温度实验和温度场、组织场的分析.运用材料性能模拟软件JMatPro得到了B410DB的机械、热物理性能及其等温转变曲线(TTT)、连续冷却转变曲线(CCT),在此基础上,利用热处理专业软件DEFORM,建立了能够反应制动盘实际淬火过程的数值模型.利用该数值模型模拟了某型号制动盘的温度场和组织场的变化过程.仿真和实验结果对比表明:该模型准确可行,温度变化和组织状态与实验吻合度高,为优化制动盘淬火过程提供了依据,该方法也可用于其他材料和型号的制动盘淬火过程,具有一定的通用性.

Aiming at the current quenching process status of a new type of motorcycle brake disc special materials B410DB which is based on artificial experience and small batch trial production,its quenching process＇s numerical simulation and temperature experiment were carried out and it＇s temperature and microstructure fields were analyzed.Through the material performance simulation software JMatPro,the mechanical,thermal physical properties and the time temperature transformation（TTT） curve,the continuous cooling transformation CCT curve of B410DB were given.Based on the quenching process,and using heat treatment professional software DEFORM,a finite element model（FEM） was developed to indicate the brake disc actual quenching process.The FEM was used to successfully simulate the temperature field and the change of the organization process of a certain type of brake disc.Simulation and experiment at results show that the FEM not only is accurate and feasible,but also can provide evidence for optimizing the quenching process;This method can be generally used for the quenching process of other materials and types of brake disc.