| Autor: |
Lao, Bin |
| Přispěvatelé: |
Bührig-Polaczek, Andreas |
| Jazyk: |
němčina |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
Aachen : Giesserei Institut, RWTH Aachen, Ergebnisse aus Forschung und Entwicklung / Gießerei-Institut, RWTH Aachen 12, III, 181 S. : Ill., graph. Darst. (2013). = Zugl.: Aachen, Techn. Hochsch., Diss., 2013 |
| Popis: |
Hybrid components become more and more important in light weight production. Joining different materials is very promising to meet today’s technical and economical demands. By high pressure composite casting, metal hybrids with excellent light weight and structural properties are producible. In this context, this work focusses on recasting metal sheets with light metal alloys. Both material and casting process are analyzed and characterized for a better comprehension in terms of development and production of metal-metal hybrids. Ensuing from metal sheets’ and casting materials’ fundamentals, the used materials and existing concepts for light weight metal hybrids are described. Moreover the influence of the casting heat on the properties of the metal sheets and the influence of the surface treatment on the interface as well as the interaction between the different materials are investigated. Found principles could successfully be transferred to a close-to-production automotive demonstrator. Typical defects in cast metal hybrids are characterized and referred to their causes. The deduced optimization measures are applicable to further developments on metal hybrids. Results from destructive and non-destructive tests are appraised with respect to the joint. On the basis of this data a new concept for a quality control of metal-metal hybrids in a potential full-scale production was developed. Furthermore the effect of heat depending on the choice of materials, the casting system and the size of the cast part was analyzed to provide a basis for the control of distortion. By light metallography and SEM the formation of the boundary layer of steel sheet – aluminum casting and aluminum sheet – magnesium casting was characterized. As a result, metallic continuity and form closure could specifically be influenced. For a better connection an innovative surface patterning was devised, which leads to an effective micro bracing and thus to a much better material junction. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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