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研究了回复与再结晶对CSP流程冷轧深冲板“饼型”晶粒尺寸分布规律的影响。采用在退火升温过程中的不同温度增加保温台阶的方法,使冷轧钢板实现不同程度的回复和再结晶。随增加的保温台阶温度提高,退火板的晶粒沿轧向的分布逐渐趋于Weibull分布,沿板厚方向的分布对Weibull函数的拟合R2在台阶温度为540℃时最低,580℃最高。分析后认为,具有“饼型”晶粒特征的CSP流程冷轧深冲钢板,晶粒尺寸分布规律受钢板中织构和析出相粒子的共同影响。
The effects of recrystallization and recrystallization on the grain size distribution of cold-rolled deep drawing plate Adopting the method of increasing the thermal insulation steps at different temperatures during the annealing process, the cold-rolled steel sheets are recovered and recrystallized in different degrees. With the increase of temperature, the grain size of annealed sheet tends to Weibull distribution along the rolling direction. The fitting R2 of the distribution of Weibull function along the sheet thickness direction is the lowest when the temperature is 540 ℃ and the highest is 580 ℃. After the analysis, it is considered that the CSP process with “cake type” grain characteristics is cold-rolled deep-drawn steel plate, and the grain size distribution is affected by both the texture in the steel plate and precipitated phase particles.