XC45钢热变形行为及微观组织演化模型  

Hot deformation behavior and microstructure evolution model of XC45 steel

作　　者：柴蓉霞[1] 郭卫[1] 郭成[2] 

机构地区：[1]西安科技大学机械工程学院,西安710054 [2]西安交通大学机械工程学院,西安710049

出　　处：《塑性工程学报》2016年第1期119-125,共7页Journal of Plasticity Engineering

基　　金：陕西省教育厅资助项目(14JK1462)

摘　　要：法兰轴是变速器上的核心传动部件,对汽车的效率以及安全起着至关重要的作用。通过热压缩实验和金相实验,分析了法兰轴材料XC45钢在温度为1 053K^1 253K、应变速率为0.01s^(-1)~10s^(-1)条件下的高温变形行为。获得了材料的真实应力-应变曲线,分析了变形工艺参数对其微观组织的影响规律,构建了微观组织演化模型,并进行了验证。结果表明,所建立的微观组织演化模型计算结果与实验结果的平均误差在20%以内,能够较好的描述材料微观组织演化过程。As typical parts of vehical,the flange shaft and the spherical housing ate play major roles in transmitting torque and carrying.As the key component part of transmission,the flange shaft is play a major role in efficiency and safety for the vehical.Through the isothermal compression and the metallographic tests are conducted on the material of flange shaft such as XC45 steel.the high temperature deformation behaviors with the temperature range from 1 053 K to 1 253 K and the strain rates range from0.01s-1 to 10s-1 of XC45 steel are studied.the true stress-true stain curves are obtained.The influence rules of process parameters on microstructure are revealed.and the microstructure evolution models of XC45 steel under different deformation conditions are established,and the result of the model is verified.The results show that：Compared with experimental data,the average error of microstructure evolution models is built in the paper are all within 20%.So the deformation process can be better described with the microstructure evolution models.

关 键 词：XC45钢 高温变形行为 工艺参数 微观组织演化模型 

分 类 号：TG142.1[一般工业技术—材料科学与工程]