一种高锰奥氏体无磁钢变形抗力模型的建立与验证  

Establishment and Validation of Deformation Resistance Model of High Manganese Austenite Non-magnetic Steel

作　　者：赵峻[1] 朱俊峰[1] 隋凤利[1] 左岳 

机构地区：[1]安徽工业大学冶金工程学院,安徽马鞍山243002 [2]马鞍山钢铁股份有限公司第四钢轧总厂,安徽马鞍山243041

出　　处：《安徽工业大学学报（自然科学版）》2015年第1期7-11,共5页Journal of Anhui University of Technology（Natural Science）

基　　金：国家自然科学基金项目(51274062)

摘　　要：利用圆柱体单轴压缩实验获得高锰奥氏体无磁钢在变形温度为900～1 100℃、应变速率为0.1～30.0 s-1条件下的真应力-真应变曲线。分析变形温度、应变速率和变形程度对变形抗力的影响,建立高锰奥氏体无磁钢的变形抗力模型,并与实验变形抗力进行对比分析,表明该模型具有良好的拟合精度。将变形抗力模型嵌入基于刚塑性有限元法的数值仿真模型,并对实际轧制过程进行模拟,结果表明,轧制力计算值与实测值的偏差控制在7%以内。True stress- strain curves of the high manganese austenite non- magnetic steel were obtained by using the cylindrical uniaxial compression experiment at the temperature of 900- 1 100 ℃ and the strain rate of 0.1-30.0 s-1. The effect of deformation temperature, strain rate and deformation degree on deformation resistance were analyzed, and a deformation resistance model suitable for the high manganese austenite steel was built. The good fitting accuracy of that model was proved by comparison between the regressed and the tested stresses. The actual rolling processes were simulated with a rigid-plastic finite element model and such deformation resistance model was inserted. Results show that the deviation of the calculated and the measured rolling forces is not more than 7%.

关 键 词：高锰奥氏体无磁钢 变形抗力 圆柱体单轴压缩 刚塑性有限元法 

分 类 号：TG301[金属学及工艺—金属压力加工]