| 2 | DISTRIBUTION OF Ce AND S IN Fe-C-Si ALLOY AND THEIR INFLUENCE ON MORPHOLOGY OF GRAPHITE显示文摘Electrolytic extraction-radiometry and microradioautography techniques were used to studythe distribution of nodulizing element Ce and anti-nodulizing element S in phases of highpurity Fe-C-Si alloy.The results show that,besides forming inclusions,most of Ce atomsconcentrate in graphite firstly.As the Ce content increases,the concentration of Ce ingraphite tends to saturate,relatively large amount of Ce dissolves in the alloy.Usually,thesulphur also concentrates in graphite.However,it may exist in the form of FeS at theeutectic colony boundaries,if the concentration of S is at a quite high level.Very littleamount of S dissolves in the alloy.The morphology of graphite depends upon the degree ofsaturation of Ce.It appears as nodular when Ce was saturated and,as vermicular while itwas semi-saturated. | DU Weixi HAN Qiyong JIANG Qing ZHANG Zhongzhi ZHONG Weizhen LIU Shaoshou Jilin University of Technology,Changchun,China in revised form 3 April 19871 Beijing University of Science and Technology | 1989 | Acta Metallurgica Sinica(English Letters)1989，2，8： | 0 |
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