The role of solutes for grain refinement by (SiC)P: Experiment and theoretical calculation
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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Magnesium Technology 2008: Proceedings of a Symposium Sponsored by the Magnesium Committee of the Light Metals Division of the Minerals, Metals and Materials. Hrsg. / Mihriban O. Pekguleryuz; Neale R. Neelameggham; Randy S. Beals; Eric A. Nyberg. The Minerals, Metals & Materials Society, 2008. S. 95-99 (Magnesium Technology).
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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TY - CHAP
T1 - The role of solutes for grain refinement by (SiC)P
T2 - Magnesium Technology 2008
AU - Günther, R.
AU - Hartig, Ch
AU - Anopuo, O.
AU - Hort, N.
AU - Bormann, R.
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
KW - Casting
KW - Grain refinement
KW - Inoculation
KW - Magnesium alloys
KW - Nucleation and growth
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=45749109423&partnerID=8YFLogxK
M3 - Article in conference proceedings
AN - SCOPUS:45749109423
SN - 9780873397117
SN - 0873397118
T3 - Magnesium Technology
SP - 95
EP - 99
BT - Magnesium Technology 2008
A2 - Pekguleryuz, Mihriban O.
A2 - Neelameggham, Neale R.
A2 - Beals, Randy S.
A2 - Nyberg, Eric A.
PB - The Minerals, Metals & Materials Society
Y2 - 9 March 2008 through 13 March 2008
ER -