罩式退火工艺对CSP冷轧薄板组织的影响

Efeect of Bell-type Annealing on Texture of CSP Cold-rolled Sheet

本文根据光学显微镜、扫描电子显微镜（Quanta 400）及配套HKL Channel5型电子背散射分析系统对包钢SPCC 0.55mm冷轧样在再结晶退火过程中显微组织和微区取向转变的分析结果,设计了6种罩式退火工艺,并对六种工艺下退火钢板进行显微组织分析,测定了六种退火工艺下晶粒尺寸分布,发现10-25μm晶粒长大的同时是伴随0-10μm晶粒的消失。实验结果表明,随着退火温度的升高,再结晶过程是大晶粒逐步吞并小晶粒的过程。

By means of the optical microscope,the scanning electron microscope（Quanta 400）and electron back scatter diffraction（HKL Channel5）,we observate the transformation of microstructure and texture during recrystallization in cold-rolling sample of SPCC 0.55 mm before,we design six processes depending on this conclusion,analysis the change of grain size.We find that when the grain of 10-25μm growing,the grain of 0-10μm is disappeared.The result shows that the big grain swallow the small grain With the increase of temperature.