卷曲温度对中碳钢组织及力学性能的影响

The effect of curling temperature on the microstructure and mechanical properties of medium carbon steel

在中碳钢轧制变形过程中,卷曲温度对其显微组织和力学性能有较大影响。利用拉伸试验、维氏硬度测试、金相检验及扫描电镜分析等方法对不同卷曲温度下的中碳钢进行分析。结果表明:随着卷曲温度的降低,铁素体和珠光体分布更加均匀,珠光体片层间距减小,带状级别变小,材料的强度、韧性、硬度明显变大,塑性变差。

During the rolling deformation process of medium carbon steel,the curling temperature had a significant impact on the microstructure and mechanical properties.The medium carbon steel at different curling temperatures were analyzed by tensile testing,Vickers hardness testing,metallographic examination,and scanning electron microscopy analysis.The results show that as the curling temperature decreased,the distribution of ferrite and pearlite became more uniform,the interlayer spacing of pearlite decreased,and the band level became smaller.The strength,toughness and hardness of the material significantly increased,while the plasticity deteriorated.