高Ti微合金高强钢静态再结晶动力学模型

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基金项目:

国家自然科学基金资助项目(51674123)；河北省自然科学基金资助项目(E2017209237 and E2016209390)

Mathematical Modeling of the Recrystallization Kinetics of High Ti Microalloyed High Strength Steel

1. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, Hebei, China;
2. Technology Center, Shougang Jingtang United Iron and Steel Co., Ltd., Tangshan 063210, Hebei, China

摘要: 采用Gleeble-3500热模拟试验机,通过应力松弛法对高Ti微合金高强钢的静态再结晶行为进行研究。结果表明:在高的变形(保温)温度和大的变形量下,静态再结晶进程加快,变形速率对静态再结晶的影响较小;计算出静态再结晶激活能Q_rex=276.45 kJ/mol,证实了微合金元素Ti有抑制再结晶的作用;基于Avarami方程确定了试验钢静态再结晶动力学模型。
- 高Ti微合金钢 /
- 静态再结晶 /
- 动力学模型 /
- 再结晶激活能
Abstract: Static recrystallization behavior of high strength steel with high Ti microalloying was studied by a Gleeble 3500 thermal simulation testing machine and stress relaxation method.The results show that the static recrystallization process is accelerated and the deformation rate has little effect on the static recrystallization under high deformation temperature and large deformation.The calculated activation energy of static recrystallization is Q_rex=276.45 kJ/mol,which confirms that the microalloy element Ti can inhibit recrystallization.Based on Avarami equation,the static recrystallization model of experimental steel has been established.
- high Ti microalloyed steel /
- static recrystallization /
- dynamic model /
- recrystallization activation energy