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

Abstract:

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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 20μm. 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.

Info:

Periodical:

Advanced Materials Research (Volumes 239-242)

Edited by:

Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He

Pages:

1239-1242

DOI:

10.4028/www.scientific.net/AMR.239-242.1239

Citation:

X. G. Diao et al., "Effects of Trace Elements on the Formation of Spheroidal Graphite in Ductile Iron", Advanced Materials Research, Vols. 239-242, pp. 1239-1242, 2011

Online since:

May 2011

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Price:

$35.00

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