热轧中厚板组织-性能预测及软件开发  

Prediction and Software Development of Microstructure and Properties of Hot Rolled Steel Plates

作　　者：许云波[1] 刘相华[1] 王国栋[1] 谢瑞萍[2] 金永春[2] 

机构地区：[1]轧制技术及连轧自动化国家重点实验室(东北大学),辽宁沈阳110004 [2]首钢总公司技术研究院,北京100041

出　　处：《钢铁》2006年第3期51-54,共4页Iron and Steel

基　　金：国家自然科学基金资助项目(50504007;503334010;50474086);辽宁省博士启动基金(20041009)

摘　　要：以热力学和动力学理论为基础,开发了组织性能预测系统,并在首钢中厚板厂实现应用。预测了钢板屈服强度、抗拉强度随工艺及冷却参数的变化,预测结果和实测值吻合较好。随着冷却速率的增加,铁素体体积分数减少,晶粒尺寸变细。同样,成品厚度较大时,铁素体晶粒尺寸较大,铁素体体积分数变化不大。待温厚度为成品厚度的2倍左右,可以使Q235中板获得良好的力学性能。On the basis of thermodynamics and kinetics, the microstructure-property prediction system was developed and successfully applied at Shougang plate plant. The variation of yield strength and tensile strength of steel plate with process parameters can be predicted. The predicted results are in good agreement with measured ones. The transformed ferrite volume fraction increases and grain size decreases with the increase of cooling rate. With the increase of steel plate thickness, the average ferrite grain size increases and the change of ferrite volume fraction is very small. When the thickness of intermediate rolling piece is two times of final product, good strength and superior toughness can be obtained.

关 键 词：再结晶 物理冶金模型 热轧中厚板 性能预测 软件开发 

分 类 号：TG335.11[金属学及工艺—金属压力加工]