摘要
测量了1.35%Si无取向硅钢的静态CCT曲线,根据静态相变点测量了实验钢的动态CCT曲线,根据动态相变点设计了不同冷却速度的模拟热轧实验并利用EBSD技术对不同冷却速度的退火试样进行微观织构分析。实验结果表明:冷却速度越小,奥氏体向铁素体转变开始温度越高,再结晶程度越高,再结晶组织晶粒越粗大;热轧退火织构分布与在两相区终轧有明显关系,主要织构类型有旋转立方织构、{111}<121>织构、{111}<110>织构和立方{100}<001>织构;随着冷却速度上升,{111}<121>织构、{111}<110>织构和立方{100}<001>织构含量下降,旋转立方织构含量上升,高斯织构含量较稳定。
Static CCT curve of a 1.35% Si steel was tested and the dynamic CCT curve of the steel was tested based on the static phase transformation points. The hot rolled parameters of the steel were determined according to the phase transformation points with different cooling rates. EBSD technique was used to analyze micro-textures of the hot rolled steel under different cooling rates. The experimental results indicate that coarser recrystallized grains and higher static phase transformation temperatures are obtained by a lower cooling rate; the distribution of reerystallized textures is affected by the finishing roiling temperature, which is in two-phase region. When the cooling rate is decreased, the proportion of cube {100} 〈001 〉 texture,{111} 〈 121 〉 texture and { 111 } 〈 110 〉 texture are increased while the proportion of rotated cube {100} 〈 110 〉 texture is declined. The proportion of Goss texture is stable when the cooling rate is changed.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2016年第2期104-109,共6页
Transactions of Materials and Heat Treatment
基金
中央高校基本科研业务费专项资金资助项目(新教师基金TP-A3类
编号:FRF-TP-15-063A3)
关键词
无取向硅钢
冷却速度
织构
non-oriented silicon steel
cooling rate
texture
