亚共析钢复相组织中铁素体晶粒尺寸测定方法  

Method for determining ferrite grain size in two-phase microstructure of hypoeutectoid steel

作　　者：尹立新 崔桂彬 孟杨 任群 温娟 鞠新华 YIN Li-xin;CUI Gui-bin;MENG Yang;REN Qun;WEN Juan;JU Xin-hua(Research Institute of Technology,Shougang Group Co.,Ltd.,Beijing 100043,China)

机构地区：[1]首钢集团有限公司技术研究院,北京100043

出　　处：《中国冶金》2020年第8期46-50,76,共6页China Metallurgy

摘　　要：亚共析钢复相组织主相的晶粒尺寸主要采用金相法和扫描电镜EBSD法。其中,金相法可以测量晶粒尺寸并对其评级,定量测量过程需要手动完成;扫描电镜EBSD法可对经过电解抛光的试样进行晶粒尺寸的自动测量,借助两相花样质量的差异,实现对铁素体+珠光体复相组织中铁素体晶粒的自动统计。The grain size of the main phase in the two-phase microstructure of the hypoeutectoid steel is mainly determined by two methods: metallographic method and EBSD method. The grain size can be measured and ranked by the metallographic method, while the quantitative measurement process of grain size needs to be completed manually. The grain size of electrolytically polished specimens can be automatically measured by the EBSD method. With the difference in the quality of the two-phase pattern, the automatic analysis of the ferrite grain in the two-phase microstructure of ferrite and pearlite can be realized.

关 键 词：复相组织 晶粒尺寸 铁素体 珠光体 

分 类 号：TG142.15[一般工业技术—材料科学与工程]