P510L钢连铸坯高温力学性能  

High temperature mechanical properties of P510L steel

作　　者：张星[1] 陈登福[1] 董志华[1] 龙木军[1] 马有光[1] 徐松[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《中国科技论文》2013年第2期120-123,共4页China Sciencepaper

基　　金：高等学校博士学科点专项科研基金资助项目(20090191110012)

摘　　要：通过Gleeble-1500D热力模拟试验机测试了P510L钢连铸坯在600～1 300℃区间的高温力学性能参数。结果表明:P510L钢的低延性温度区间为760～830℃;为避免裂纹缺陷的产生,连铸坯矫直温度要控制在830℃以上;P510L钢的高温屈服强度、抗拉强度、弹性模量和塑性模量总体上都随温度升高呈降低的趋势,并且在950℃以下的中低温区间,变化趋势显著;在相变温度区域内,高温屈服强度和抗拉强度值随温度降低趋势减缓,高温弹性模量和塑性模量曲线在对应温度区间也出现了不同程度的波动。High temperature mechanical properties of P510L steel from 600 to 1 300 ℃ were examined through a Gleeble-1500D thermal simulation test machine. The results demonstrated that the range o{ brittle temperature of P510L steel is 760 830 ℃. In order to avoid crack defects, the temperature on the surface of strand should be above 900 ℃. With the temperature increas- ing, the yield and tensile strength, elasticity and plastic modulus decreased steadily, and showed a sharp decline below 950 ℃ ; in the phase-transition range, the curves of yield strength and tensile strength evolved gently. However, the curves of elastic and plastic modulus become undulated to different extent.

关 键 词：钢铁冶金 铸坯 拉伸试验 高温性能 

分 类 号：TF777[冶金工程—钢铁冶金]