발간논문

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Vol.31, No.8, 1077 ~ 1087, 1993
Title
Effect of Mg on the Interface Segregation of commercial Cast Iron
박장식Jang Sik Park, 지태구Tae Ku Jhee, 이영백Young Pak Lee, 홍재화Jae Hwa Hong
Abstract
The segregation established at the interfaces of gray and ductile iron has been examined by using Auger electron spectroscopy. This work pursued the effect of Mg on the interface chemistry as a first step to understand the microstructural modification caused by the doping addition of Mg into cast iron melts. In gray iron, S was the major segregant to both the iron/graphite and iron/iron interfaces. The effect of Mg in ductile iron was demonstrated by the clean interfaces with no such impurity segregation as observed in gray iron. Oxygen segregation was not significant at both the gray and ductile iron interfaces contrary to the results of ocher works. The segregation at, the iron/iron interface greatly supported the results obtained from the iron/graphite interface, especially with regrad to the controversial O segregation and also the segregation behavior of S as affected by Mg.
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