摘要
选择新型细晶高强IF钢为研究对象,在实验室进行了热轧、冷轧及罩式退火实验。利用光学显微镜、透射电镜复型和电子背散射衍射(EBSD)技术,研究了不同退火时间对细晶高强IF钢显微组织、析出相及织构的影响。结果表明,选择合适的退火时间,晶粒变得细小、均匀。细晶高强IF钢在退火过程中析出大量的Nb C、Nb(CN)相;随退火时间延长,钢中析出相粒子偏聚长大。为了获得较强的有利织构及优异的冲压性能,实验钢退火时间应选定在5 min。
Hot rolling,cold rolling and annealing experiments of a fine grain high strength IF steel were carried out in laboratory. The effects of annealing time on microstructure and textures of the IF steel were investigated by optical microscope,transmission electron microscopy( TEM) and electron backscatter diffraction( EBSD) technique. The results show that the microstructure of the steel is significantly influenced by the annealing time. A large amount of Nb C and Nb( CN) carbides are precipitated in the IF steel during annealing treatment,and the precipitations grow up with the increasing of annealing time. To obtain a favoriable texture and drawing property,the annealing time of 5 minutes is recommended.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2015年第4期140-144,共5页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(51474127)
