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Characterization of...
Characterization of primary dendrite morphology in complex shaped lamellar cast iron castings
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- Svidró, Peter (author)
- Jönköping University,JTH. Forskningsmiljö Material och tillverkning – Gjutning
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- Elmquist, Lennart (author)
- Jönköping University,JTH. Forskningsmiljö Material och tillverkning – Gjutning,Sintercast AB
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- Dugic, Izudin, 1962- (author)
- Jönköping University,Linnéuniversitetet,Institutionen för maskinteknik (MT),Maskinteknik,JTH. Forskningsmiljö Material och tillverkning – Gjutning,Linneus University Växjö
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- Diószegi, Attila, 1962- (author)
- Jönköping University,JTH. Forskningsmiljö Material och tillverkning – Gjutning
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Jönköping University JTH Forskningsmiljö Material och tillverkning – Gjutning (creator_code:org_t)
- The Institute for Research in Materials Science and Technology (INTEMA), 2014
- 2014
- English.
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In: The 10<sup>th</sup> International Symposium on the Science and Processing of Cast Iron, SPCI10, November, 2014, Mar del Plata, Argentina. - : The Institute for Research in Materials Science and Technology (INTEMA). ; , s. 1-7
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Abstract
Subject headings
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- Shrinkage porosity and metal expansion penetration are two fundamental defects appearing during the production of complex shaped lamellar cast iron components. Simplified test models simulating the thermal and geometrical conditions existing in complex shaped castings have been successfully used to provoke shrinkage porosity and metal expansion penetration. A stereological investigation of the primary dendrite morphology indicates a maximum intra-dendritic space in connection with the casting surface where the porosity and the penetration defects appear. Away from the defect formation area the intra-dendritic space decreases. Comparison of the simulated local solidification times and measured intra-dendritic space indicates a strong relation which can be explained by the dynamic ripening process. The slow local solidification time situated at the boundary between the casting surface and its surrounding is explained to be the reason for the formation of an austenite morphology which can promote mass flow between dendrites, thereby provoking shrinkage porosity or metal expansion penetration.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Keyword
- lamellar cast iron
- primary austenite
- dendrite morphology
- coarsening
- shrinkage porosity
- metal expansion penetration
- Teknik
- Technology (byts ev till Engineering)
Publication and Content Type
- ref (subject category)
- kon (subject category)
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