Effects of Trace Elements on the Formation of Spheroidal Graphite in Ductile Iron

被引：0
|
作者：
Diao, Xiaogang [1 ]
Ning, Zhiliang [1 ]
Cao, Fuyang [1 ]
Ren, Shanzhi [2 ]
Sun, Jianfei [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[2] Harbin Univ Sci & Technol, Sch Mat Sci & Engn, Harbin 150080, Peoples R China
来源：
ADVANCED MATERIALS, PTS 1-4 | 2011年 / 239-242卷
关键词：
Ductile iron; Graphite morphology; Trace element; CAST-IRON; MICROSTRUCTURE; SPHERULITES; GROWTH;
D O I：
10.4028/www.scientific.net/AMR.239-242.1239
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Spheroidal graphite was obtained by direct quenching iron melt atfter spheroidization and inoculation procedures. The morphology and the effects of trace elements on the formation of spheroidal graphite were investigated by scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX) spectroscopy. Results indicate that all the graphite fixed by quenching, is nearly spheroidal with a diameter of approximately 20 mu m. In addition, the SEM image of graphite morphology confirms the screwed growth model of spheroidal graphite. The linear distribution of trace elements shows that the nucleus of spheroidal graphite consists of antimony, cerium, magnesium and sulfur element. Meanwhile, trace elements, such as antimony, cerium and magnesium, enrich around graphite nodule, which facilitates the formation of spheroidal graphite.
引用
收藏
页码：1239 / +
页数：2
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