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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。
The flange shaft is the key transmission on the transmission and plays a crucial role in the efficiency and safety of the car. Through the hot compression test and the metallographic experiment, the deformation behavior of the flange shaft material XC45 steel at the temperature of 1 053K ~ 1 253K and the strain rate of 0.01s ~ (-1) ~ 10s ~ (-1) was analyzed. The real stress-strain curve of the material was obtained. The influence of deformation parameters on the microstructure was analyzed, and the microstructure evolution model was constructed and verified. The results show that the average error between the calculated and experimental results of the microstructure evolution model is less than 20%, which can well describe the microstructure evolution of the material.