贝氏体非调质紧固件用钢动态再结晶行为分析

钢铁研究学报, 2012, 24(10): 39-42.

贝氏体非调质紧固件用钢动态再结晶行为分析

1.1. School of Materials Science and Engineering, Anhui University of Technology, Ma′anshan 243002, Anhui,China 2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China 3. Ma′anshan Iron and Steel Co Ltd, Technology Center, Ma′anshan 243000, Anhui, China>

基金项目: 科技部支撑计划项目

关键词：贝氏体非调质钢 , dynamic recrystallization , hot deformation activation energy , RTT curve

Analysis on Dynamic Recrystallization Behavior of Bainitic Non-Quenched and Tempered Steel for Fasteners

CAO Jie1 , YAN Jun1 , LIU Ya-zheng2 , ZHANG Jing1 , SUN Wei3

Keywords： bainitic non-quenched and tempered steel , 动态再结晶 , 热变形激活能 , RTT曲线

为研究贝氏体非调质紧固件用钢的动态再结晶行为，在Gleeble-3500热模拟试验机上进行了单道次压缩试验，并分析了压缩变形应力-应变曲线。研究表明，奥氏体热变形激活能较一般C-Mn钢要高，为427.065kJ/mol；再结晶开始时间与温度曲线在1000℃左右出现明显的转折点，温度低于1000℃时，动态再结晶发生困难。

In order to characterize the dynamic recrystallization behavior of a bainitic non-quenched and tempered steel, single compression tests were performed on a Gleeble-3500 simulator. The stress-strain curves obtained were analyzed. The results show that the activation energy of deformation is 427.065kJ/mol, which is higher than the plain C-Mn steel. There is a turning point on the recrystallization beginning time and temperature (RTT) curve at about 1000℃. The dynamic recrystallization is more difficult to occur when the temperature is below 1000℃.

参考文献

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[2]	张羊换，王福成.微合金化钢的动态再结晶及其显微组织的研究[J].热加工工艺,2000,(3):5-7

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