Mapping carbon distribution in 35SiMn steel by energy-filtered transmission electron microscopy  

作　　者：ZHONG XiaoYan ZHOU HuiHua WANG FengYing ZHU YueFeng 

机构地区：[1]Department of Materials Science and Engineering,Beijing National Center for Electron Microscopy,Laboratory of Advanced Materials,Tsinghua University,Beijing 100084,China [2]Key Laboratory for Advanced Materials Processing Technology,Ministry of Education&Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Science China(Technological Sciences)》2012年第7期1833-1837,共5页中国科学（技术科学英文版）

基　　金：supported by the National Basic Research Program of China(Grant Nos.2010CB630800 and 2009CB623701);National Natural Science Foundation of China(Grant No.51001064);the Innovation Method Program(Grant No.2010IM031300);Specialized Research Fund for the Doctoral Program of Higher Education of China(Grant No. 20100002120047)

摘　　要：In this study,the three-windows method,the jump-ratio method and the R-map method in energy-filtered transmission electron microscopy(EFTEM) have been applied to mapping carbon distribution in 35SiMn steel after a quenching-partitioning treatment.The carbon contamination is successfully suppressed by using EFTEM and plasma-cleaning TEM samples.Compared to the three-windows method and the jump-ratio method,the R-map method provides carbon distribution with less noises,and is insensitive to changes in sample thickness.We have demonstrated that the R-map method is a better way for carbon mapping in middle-carbon steel without the influence of carbon contamination.

关 键 词：carbon mapping distribution STEEL energy-filtered transmission electron microscopy 

分 类 号：O189.11[理学—数学] TF122[理学—基础数学]