| Autor: |
Günther, R., Hartig, Ch, Anopuo, O., Hort, N., Bormann, R. |
| Přispěvatelé: |
Pekguleryuz, Mihriban O., Neelameggham, Neale R., Beals, Randy S., Nyberg, Eric A. |
| Jazyk: |
angličtina |
| Rok vydání: |
2008 |
| Předmět: |
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| Zdroj: |
Günther, R, Hartig, C, Anopuo, O, Hort, N & Bormann, R 2008, The role of solutes for grain refinement by (SiC) P : Experiment and theoretical calculation . in M O Pekguleryuz, N R Neelameggham, R S Beals & E A Nyberg (eds), Magnesium Technology 2008 : Proceedings of a Symposium Sponsored by the Magnesium Committee of the Light Metals Division of the Minerals, Metals and Materials . Magnesium Technology, The Minerals, Metals & Materials Society, pp. 95-99, Magnesium Technology 2008, New Orleans, LA, United States, 09.03.08 . |
| Popis: |
Grain refiners for Al-containing Mg-alloys are still deficient and under investigation. To clarify the mechanisms of grain refinement by inoculation a simulation method for heterogeneous nucleation has been used, allowing the prediction of the grain size for a given particle size distribution, volumetric content of inoculants, cooling rate and alloy constitution. To proof the model, grain refinement efficiency of (SiC)P in Mg3wt%Al was examined experimentally. It was found that (SiC)P results in significant grain refinement. Experiments with (SiC)p in Al-free Mg-alloys have shown that additionally to the low lattice misfit of SiC, solutes play an important role for effective grain refinement. While the grain refinement via (SiC) p inoculation of pure Mg is negligible, a distinct effect has been achieved in Mg3wt%Zn. The model makes qualitatively correct predictions for the grain size and its variation with cooling rate. Relevant aspects for the consideration of particle-specific properties and solutes will be discussed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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