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graphite-formation
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The influence of annealing temperature on the graphitisation of CK 45 steel
, Article Journal of Alloys and Compounds ; Volume 475, Issue 1-2 , 2009 , Pages 822-826 ; 09258388 (ISSN) ; Issa Abadi Bozchalooi, G ; Azzat pour, H. R ; Sharif University of Technology
2009
Abstract
Graphitization in steels is a subject which has been studied temporarily in past decades. The importance of this phenomenon is due to the fact that graphite formation in steels can ease machining treatment and increase cold-work capability of steels. Weight reduction of the parts and the dedicated bioenvironmental properties of these steels are considered as a valuable replacement for lead containing steels for researchers. Anyway there has been always the assumption that this operation is long and not economically cost effective. For this reason due to the different conditions of applied heat treatments, the effects of the temperature and the time period of heat treatment on the...
As-cast microstructures of aluminium containing ductile cast iron
, Article TMS Annual Meeting, 14 February 2010 through 18 February 2010, Seattle, WA ; 2010 , Pages 37-47 ; 9781617822933 (ISBN) ; Shayesteh Zeraati, A ; Naser Zoshki, H ; Yousef Sani, M. R ; Sharif University of Technology
2010
Abstract
In this paper, the effect of aluminum content on the formation mechanism, volume fraction, morphology and particle size distribution of graphite has been investigated. Addition of aluminum on ductile iron causes some fundamental changes in iron-carbon phase-diagram and as a result, improves the graphite formation during eutectic transformation. The results reveals that aluminum compounds have been formed in the core of graphite nodules, thus aluminum plays an important role in the formation of graphite nodules. Furthermore, it is indicated that an increase in the aluminum content also leads to an increase in the number of graphite nodules and a decrease in the nodules size. By using EPMA,...
The effect of aluminium content on morphology, size, volume fraction, and number of graphite nodules in ductile cast iron
, Article Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications ; Volume 224, Issue 3 , 2010 , Pages 117-122 ; 14644207 (ISSN) ; Naser Zoshki, H ; Kiani Rashid, A. R ; Yousef Sani, M. R ; Sharif University of Technology
Abstract
The effect of aluminium content on the formation mechanism, volume fraction, morphology, and particle size distribution of graphite has been investigated. Addition of aluminium to ductile iron causes some fundamental changes in iron-carbon phase diagrams and, as a result, improves graphite formation during eutectic transformation. Results reveal that aluminium compounds have been formed in the core of graphite nodules; thus aluminium plays an important role in the formation of graphite nodules. Furthermore, it is indicated that an increase in the aluminium content also leads to an increase in the number of graphite nodules and a decrease in the nodule size. By using electron probe...