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Pores and clustering of inclusions in the continuous casting of steel: Precipitation
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Casting of Metals.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Casting of Metals.ORCID iD: 0000-0002-8318-1251
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Casting of Metals.
(English)Manuscript (preprint) (Other academic)
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-174087OAI: oai:DiVA.org:kth-174087DiVA: diva2:857739
Note

QS 2015

Available from: 2015-09-30 Created: 2015-09-30 Last updated: 2015-09-30Bibliographically approved
In thesis
1. Relationship between motion of bubbles and agglomeration of inclusions into clusters during solidification of continuously cast steel
Open this publication in new window or tab >>Relationship between motion of bubbles and agglomeration of inclusions into clusters during solidification of continuously cast steel
2015 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The possibility of cluster formation during solidication of steel is explored to explain structures that are seen on the fracture surface of the steel. A hypothesis is built that postulates porosities provide favourable locations for inclusions to agglomerate and form clusters.  A thermodynamic model is constructed to describe precipitation of porosity and inclusions. Formation of inclusions follow a nucleation and growth mechanism. Porosities on the other hand are the product of pressure balance in the liquid.  Motion of pores and inclusions is analysed based on the drag force and  surface  stresses. Gradient of surface tension is also identied as a driving force which acts on the pore surface and would cause motion. It is shown that relative motion of pores and inclusions coupled with  the inclusion tendency to get attached on pore surface makes or a viable mechanism explaining agglomeration of inclusion particles to clusters

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2015. 38 p.
National Category
Metallurgy and Metallic Materials
Identifiers
urn:nbn:se:kth:diva-174077 (URN)978-91-7595-685-5 (ISBN)
Presentation
2015-10-09, Sal M131 Sefström, Brinellvägen 23, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20150930

Available from: 2015-09-30 Created: 2015-09-29 Last updated: 2015-12-15Bibliographically approved

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