摘要
在Gleeble 2000热模拟实验机及D450实验轧机上进行不同参数的单道次压缩及多道次淬火实验.研究表明,对铌钒钛高强钢,微合金元素铌、钒、钛的碳氮化物能有效抑制奥氏体的高温软化行为,经过6道次变形的奥氏体晶粒细化到8μm左右,其控轧工艺为未再结晶区的控制轧制.对含钛高强钢,微合金元素钛表现出相对较弱的抑制奥氏体再结晶效果,经过6道次变形后的奥氏体晶粒细化到11μm左右,其控轧工艺为再结晶区控制轧制.
The high-temperature deformation behavior of both Nb/V/Ti-bearing and Ti-bearing HSLA rolled steels was investigated, with the single-pass reduction conducted on the Gleeble 2000 thermomechanical simulator and multi-pass quenching on a D450 experimental rolling stand. The results showed that the softening is restricted by the carbonitrides of microalloying elements Nb, V and Ti in the HSLA steel and, after 6-pass reduction, the austenite grain size is down to 8 ttm through grain refining, i.e., the controlled rolling process is not implemented in the recrystallization zone. However, the recrystallization effect by single Ti element is weaker in the HSLA-Ti steel where the austenite grain size is down to about 11μm after 6-pass reduction, i. e., the controlled rolling process is in the recrystallization zone.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第10期1369-1373,共5页
Journal of Northeastern University(Natural Science)
基金
国家高技术研究发展计划项目(2003AA33G010)
关键词
HSLA钢材
微合金元素
Nb
V
Ti
奥氏体
再结晶
控制轧制
HSLA rolled steel
microalloying element
Nb
V
Ti
austenite
recrystallization
controlled rolling process
