Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
On the Formation of Shrinkage Porosity in Gray Iron Castings
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting.
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting.
2011 (English)In: Key Engineering Materials, ISSN 1013-9826, Vol. 457, 416-421 p.Article in journal (Refereed) Published
Abstract [en]

The formation of shrinkage porosity is a concern in the production of high-quality gray iron castings. In this work, a geometry known to generate this type of defect was used to investigate some of the parameters that influence its formation. The geometry is based on the presence of a migrating hot spot that at the end of the solidification is located close to the interface between the casting and the mold. The occurrence of shrinkage porosity at this position was investigated and the cavities examined using a scanning electron microscope equipped with EDS. It is believed that this type of defect is in contact with the atmosphere during solidification. The risk for shrinkage porosity decreases with increasing carbon content. The effect of high levels of molybdenum and phosphorus was investigated and shown to influence the defect formation. Inoculation is used to control the nucleation and the effect of high levels of inoculants was also examined. The microstructure was investigated by the use of a color etching technique, and the quantification considered eutectic cell size and secondary dendrite arm spacing. The quantification was done on the microstructure in the vicinity of defects as well as in areas without porosity.

Place, publisher, year, edition, pages
Trans Tech Publications , 2011. Vol. 457, 416-421 p.
Keyword [en]
Chemical Composition, Gray Iron, Microstructure, Migrating Hot Spot, Shrinkage Porosity
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hj:diva-13868DOI: 10.4028/www.scientific.net/KEM.457.416OAI: oai:DiVA.org:hj-13868DiVA: diva2:374511
Available from: 2010-12-05 Created: 2010-12-05 Last updated: 2011-12-14Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Elmquist, Lennart
By organisation
JTH. Research area Materials and manufacturing – Casting
In the same journal
Key Engineering Materials
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 299 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf