陈翱,李忠华,何康,李烈军,陈松军,霍向东

• 1:江苏大学材料科学与工程学院
• 2:华南理工大学机械与汽车工程学院

摘要(Abstract)：

采用Gleeble 3800热力模拟实验机模拟了钛微合金化低碳钢的两阶段控轧技术,通过应力松弛法得到了其应力松弛曲线及析出—时间—温度(PTT)曲线,研究了钛微合金钢在变形过程中的析出规律。结果表明:两阶段轧制后钛微合金钢的组织显著细化,比较不同变形量下的应力松弛曲线,可以发现随着变形量的增大,应力松弛的速度加快,形变诱导析出的PTT曲线会向左偏移,最快析出的鼻尖温度由910℃降低到900℃,析出的开始时间提前,由65 s缩短至50 s,析出开始的孕育时间减少;此外,晶粒由于形变诱导析出的作用而逐渐细化,但随着保温时间的持续延长,晶粒会由于形变诱导析出的完成继续长大直至粗化。

关键词(KeyWords)： 钛微合金钢;形变诱导析出;应力松弛;晶粒细化

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 陈翱,李忠华,何康,李烈军,陈松军,霍向东

DOI: 10.13289/j.issn.1009-6264.2018-0549

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