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Effect of sulfur on graphite aspect ratio and tensile properties in compacted graphite irons

✍ Scribed by M. Bazdar; H.R. Abbasi; A.H. Yaghtin; J. Rassizadehghani

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 599 KB
Volume: 209
Category: Article
ISSN: 0924-0136
DOI: 10.1016/j.jmatprotec.2008.04.015

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✦ Synopsis

In this research, the effect of sulfur content on graphite aspect ratio and tensile properties of compacted graphite iron (CGI) was investigated. Different samples with sulfur levels ranging from 0.023 to 0.080% were produced in which the amount of magnesium was the same. Magnesium was added as FeSiMg by sandwich method and sulfur was added as pyrite powder in reaction chamber of the mold. In order to study the microstructure and mechanical properties, metallographic examination and mechanical tests were conducted on specimens.

The metallographic results showed that increasing of sulfur level from 0.023 to 0.080% in constant magnesium level of 0.057% increases the graphite aspect ratio from 0.6 to 12.4.

Evaluation of the mechanical test results indicated that increasing of sulfur level, decreases the tensile properties of compacted graphite iron.

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