Abstract
Spheroidal graphite iron, also known as ductile iron, is an iron–carbon casting alloy used in industry for its good castability, balanced mechanical properties, and low cost. Ductile iron consists of round graphite nodules in an iron matrix. During solidification and cooling, ductile iron castings experience dynamic volume changes due to the precipitation of graphite nodules and formation of austenite. These dynamic volume changes can distort external casting surfaces, causing swell and shrinkage porosity. A novel apparatus was custom-built to capture the casting wall movement in real time along three axes. This study found that casting expansion increased with carbon equivalent and decreased with nodularity.
Recommended Citation
N. J. Brack et al., "The Effect of Carbon Equivalent and Nodularity on Multi-axial Casting Wall Movement During Spheroidal Graphite Iron Solidification and Cooling," International Journal of Metalcasting, Springer, Jan 2025.
The definitive version is available at https://doi.org/10.1007/s40962-025-01668-7
Department(s)
Materials Science and Engineering
Keywords and Phrases
casting; ductile iron; porosity; shrinkage; swell; wall movement
International Standard Serial Number (ISSN)
2163-3193; 1939-5981
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 Springer, All rights reserved.
Publication Date
01 Jan 2025
Comments
National Science Foundation, Grant 2347391