摘要
采用金相观察和极图分析方法进行了研究。研究表明,回复阶段,再结晶晶粒和结构均未出现;再结晶完成阶段.由于具有较高的冷轧变形储能,{111}取向的晶粒优先形核、长大;晶粒长大阶段,{111}取向的品粒吞并其他取向的品粒而继续长大并趋于均匀;通过增大退火均热温度和均热时间来延长品粒长大阶段是提高深冲性的有效措施。
Through metallographical observation and pole figure analysis, the changes of recrystallization microstructure and texture have been studied in this paper in order to discover the influence mechanism of annealing process parameters on the properties of extra low - carbon and high strength bake-hardening sheet steel (ELC - BH sheet). Experimental results are shown as follows: ① Recrystallization microstructure and texture weren’t discovered at recovery stage; ② Forming nucleus and growth of {111} orientation grains were more precedent than that of other orientation grains at finished recrystallization stage because of its relatively high storage energy in cold-rolled deformation microstructure; ③ {111} textures were sharpened by annexing other orientation grains at grain growth stage; ④ The process of grain growth was prolonged with the increase of soaking temperature and soaking time so that deep drawability was improved.
出处
《工程科学学报》
EI
CSCD
北大核心
1993年第6期580-585,共6页
Chinese Journal of Engineering
关键词
超低碳钢
钢板
高强度/烘烤硬化
再结晶结构
再结晶组织
super-low canbon steels
steel plates
high strength
recrystallization texture
/ bake - hardening
recrystallization microstructure
