Q345B低锰钛微合金化钢的静态再结晶行为  

Static recrystallization behavior of low manganese and titanium microalloyed Q345B steel

作　　者：杨财水 罗许[1,2] 康永林[1] 李俊洪[2] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]攀钢集团研究院有限公司,四川攀枝花617000

出　　处：《金属热处理》2015年第3期30-33,共4页Heat Treatment of Metals

基　　金：国家高技术研究发展计划(863计划)(2013AA031601);"十二五"国家科技支撑计划(2012BAF04B01)

摘　　要：通过在Gleeble 1500热模拟机上进行双道次热压缩试验,研究Q345B低锰钛微合金化钢不同变形条件下的奥氏体软化行为。结果表明,变形温度越高,道次间隔时间越长,静态再结晶软化率越大。建立了试验钢静态再结晶动力学模型,经计算激活能为263.8 k J/mol。同一变形温度下,随变形时间增加,Ti C粒子的应变诱导析出抑制静态再结晶进行,使软化率曲线上出现平台。Softening behavior of deformed austenite in low manganese and titanium microalloyed Q 345 B steel under different deformation conditions was studied by double-pass hot compression deformation tests on Gleeble 1500 thermo-simulation machine .The results indicate that the higher the deformation temperature rises , the longer the pass interval time is , the greater the static recrystallization softening rate becomes.The static recrystallization kinetics model is established and the static recrystallization activation energy is 263.8 kJ/mol.At the same deformation temperature , with the deformation time increasing , the strain-induced precipitation of TiC particles inhibits the SRX process and the platforms can be observed in the softening curves .

关 键 词：TI微合金化 Q345B钢 静态再结晶 激活能 析出 

分 类 号：TG142.1[一般工业技术—材料科学与工程]