Effect of Alloying Elements on Graphite Morphology in CGI

Martin Selin; Daniel Holmgren; Ingvar L. Svensson

doi:10.4028/www.scientific.net/MSF.649.171

Paper Titles

Influence of Undercooling on the Kinetics of the Peritectic Transition in an Fe-4.2wt%Ni Alloy
p.143

In Situ Investigation of Liquid-Liquid Phase Separation in Hypermonotectic Alloys
p.149

In Situ Observation of Solidification in an Organic Peritectic Alloy System
p.159

Alignment of Primary Al₃Ni Phases in Hypereutectic Al-Ni Alloys with Various Compositions under High Magnetic Field Gradients
p.165

Effect of Alloying Elements on Graphite Morphology in CGI
p.171

Characterization of the Morphology of Si in the Modified Al-Si Alloys
p.177

Effects of Composition on Solidification Microstructure of Cast Titanium Alloys
p.183

Modeling of Heat and Solute Interactions upon Grain Structure Solidification
p.189

Phase-Field Simulations of Dendritic Orientation Selection in Mg-Alloys with Hexagonal Anisotropy
p.199

HomeMaterials Science ForumMaterials Science Forum Vol. 649Effect of Alloying Elements on Graphite Morphology...

Effect of Alloying Elements on Graphite Morphology in CGI

Abstract:

Understanding how alloying elements and amounts affect the shape and size of graphite in compacted graphite cast irons could be of great importance. Some important material properties that are affected by the graphite shape are tensile strength and thermal conductivity. Knowing the effect of alloying additions could be of assistance when trying to optimise material for a specific application. In order to determine how graphite changes depending on alloying additions the microstructure of nineteen CGI materials were investigated. All melts were based on one chemical composition and alloying elements were added to obtain melts with variation in magnesium, silicon, copper, tin, chromium and molybdenum. Some of the more important microstructure features that were analysed are the amount and size of different graphite particles. The result from this analysis should give an indication on what features each alloying element affect and how these features varies with alloying amount.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volume 649)

Pages:

171-176

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.649.171

Citation:

Cite this paper

Online since:

May 2010

Authors:

Martin Selin, Daniel Holmgren, Ingvar L. Svensson

Keywords:

Alloying Element, Compacted Graphite Iron (CGI), Graphite Morphology, Microstructure

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] Liu, P.C. and C.R. Loper Jr, Scanning Electron Microscope Study of the Graphite Morphology in Cast Iron. Scanning Electron Microscopy, 1980: pp.407-418.

Google Scholar

[2] Holmgren, D., R. Källbom, and I.L. Svensson, Influences of the graphite growth direction on the thermal conductivity of cast iron. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 2007. 38(2): pp.268-275.

DOI: 10.1007/s11661-006-9016-2

Google Scholar

[3] Subramanian, S.V., D.A.R. Kay, and G.R. Purdy. Compacted Graphite Morphology Control. in Transactions of the American Foundrymen's Society. 1982. Chicago, IL, USA: AFS.

Google Scholar

[4] Wallace, J.F., Effects of Minor Elements on the Structure of Cast Irons. Trans Am Foundrymen's Soc, 1975. 83: pp.363-378.

Google Scholar

[5] Shao, S., S. Dawson, and M. Lampic, The mechanical and physical properties of compacted graphite iron. Materialwissenschaft und Werkstofftechnik, 1998. 29(8): pp.397-411.

DOI: 10.1002/mawe.19980290805

Google Scholar

[6] Holmgren, D.M., A. Diószegi, and I.L. Svensson, Effects of transition from lamellar to compacted graphite on thermal conductivity of cast iron. International Journal of Cast Metals Research, 2006. 19(6): pp.303-313.

DOI: 10.1179/136404607x176203

Google Scholar

[7] Loper Jr, C.R., Inoculation of cast iron. Foundry Management & Technology, 1996. 124(9).

Google Scholar

[8] Dawson, S., Process Control for the Production of Compacted Graphite Iron, in 106th AFS Casting Congress. 2002: Kansas City, USA.

Google Scholar