钒氮含量对低碳钢奥氏体静态再结晶的影响Influence of nitrogen and vanadium on static recrystallization of austenite in vanadium-nitrogen microalloyed steels
常立忠,施晓芳,蒋春风,梁林宝,刘林清
摘要(Abstract):
采用Gleeble1500热模拟机对不同钒-氮含量的微合金钢进行了热模拟实验,并对析出物的量进行了理论计算,观察了不同成分、温度、应变量对再结晶的影响,并与铌微合金钢进行了比较。结果表明,随着钢中V-N含量的增加,实验钢中奥氏体的再结晶被逐渐抑制;随着变形温度的降低,再结晶倾向也逐渐减小。但是与含Nb钢相比,再结晶趋势较大,主要原因是V-N钢与Nb钢的析出动力学的不同,Nb钢中Nb(CN)由于应变诱导可迅速析出,从而抑制了再结晶的发生,而钒氮钢中V(CN)的析出较慢,不能快速抑制再结晶的发生。
关键词(KeyWords): 微合金钢;奥氏体;热模拟;再结晶
基金项目(Foundation):
作者(Author): 常立忠,施晓芳,蒋春风,梁林宝,刘林清
DOI: 10.13289/j.issn.1009-6264.2012.11.022
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