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Three-dimensional study of nodule clustering and heterogeneous strain localization for tailored material properties in ductile iron
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- Olofsson, Jakob, 1980- (författare)
- Jönköping University,JTH, Material och tillverkning,Department of Materials and Manufacturing, School of Engineering, Jönköping University, Sweden
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- Salomonsson, Kent (författare)
- Jönköping University,JTH, Material och tillverkning,Department of Materials and Manufacturing, School of Engineering, Jönköping University, Sweden
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- Dahle, Arne (författare)
- Jönköping University,JTH, Material och tillverkning,Department of Materials and Manufacturing, School of Engineering, Jönköping University, Sweden
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- Mathiesen, Ragnvald H. (författare)
- Department of Physics, Faculty of Natural Sciences, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
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(creator_code:org_t)
- Institute of Physics Publishing (IOPP), 2019
- 2019
- Engelska.
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Ingår i: Joint 5th International Conference on Advances in Solidification Processes (ICASP-5) & 5th International Symposium on Cutting Edge of Computer Simulation of Solidification, Casting and Refining (CSSCR-5) 17–21 June 2019, Salzburg, Austria. - : Institute of Physics Publishing (IOPP).
- Relaterad länk:
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https://doi.org/10.1...
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https://his.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Tailored heterogeneous distributions of microstructural features enable extraordinary material performance in biological and physiological structures such as trees, the aortic arch, human teeth and dinosaur skulls. In ductile iron, a heterogeneous distribution in size and morphology of graphite nodules and variations of the fractions of ferrite and pearlite are created during solidification, and varies as a function of parameters such as local cooling rate, segregation and flow. In the current work, the size distribution as well as the orientation and relation between graphite nodules is obtained by a three-dimensional reconstruction of a ductile iron microstructure from X-ray tomography. The effect of the nodule morphology and clustering on the localization of plastic strains is studied numerically using finite element analysis of the reconstructed microstructure. Real castings have a variation in geometry, solidification conditions and are subjected to variations in loads. A framework for optimized geometry and solidification conditions in order to design and deliver castings with tailored local material performance is proposed.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Biological materials
- Cutting tools
- Ductility
- Graphite
- Iron
- Microstructure
- Morphology
- Refining
- Strain
- Heterogeneous distributions
- Heterogeneous strain
- Material performance
- Microstructural features
- Optimized geometries
- Physiological structures
- Solidification condition
- Three-dimensional reconstruction
- Solidification
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)