摘要
利用Gleeble-3500热力模拟实验机对含Nb-Ti低碳微合金钢双道次高温压缩软化行为进行了模拟研究。研究了各种变形参数对该钢软化行为的影响,建立了该钢软化行为的动力学方程。结果表明,随着道次间停留时间的延长、变形温度、变形量以及应变速率的增大,再结晶率随之增大。变形温度对奥氏体晶粒尺寸有着显著的影响,变形温度的降低将使奥氏体晶粒尺寸明显粗化;奥氏体晶粒尺寸随着道次间停留时间的延长而增大,随着变形量以及应变速率的增大而减小。
The softening behavior of a low carbon Nb-Ti microalloyed steel during hot compression with double-pass was simulated on a Gleeble-3500 thermo-mechanical simulator.The effect of different deformation parameters on softening behavior of the steel was studied.The results show that recrystallization fractions increase with increase of interval time,deformation temperature,strain rate and amount of deformation.Deformation temperature,interval time between two passes,strain rate and amount of deformation have also large effect on austenite grain size.Meanwhile the model of softening behavior is built and discussed based on the experiment.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2010年第10期53-57,共5页
Transactions of Materials and Heat Treatment
基金
先进钢铁材料技术国家工程研究中心项目(D.09-0110-07-005)
关键词
含Nb-Ti低碳微合金钢
双道次热压缩
软化
low carbon Nb-Ti microalloyed steel
hot compression with double-pass
softening behavior
