Microstructural investigations of MG-AL alloys containing small amount of SiC nucleants
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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Microstructural investigations of MG-AL alloys containing small amount of SiC nucleants. / Huang, Yuanding; Hort, Norbert; Anopuo, Okechukwu et al.
Magnesium Technology 2007 - Proceedings of Symposium Sponsored by the Magnesium Committee of the Light Metals Division of TMS. Hrsg. / Randy S. Beals; Alan A. Luo; Neale R. Neelameggham; Mihriban O. Pekguleryuz. The Minerals, Metals & Materials Society, 2007. S. 421-426 (Magnesium Technology).Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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TY - CHAP
T1 - Microstructural investigations of MG-AL alloys containing small amount of SiC nucleants
AU - Huang, Yuanding
AU - Hort, Norbert
AU - Anopuo, Okechukwu
AU - Kainer, Karl Ulrich
AU - Vidrich, Gabriele
AU - Schiffl, Andreas
AU - Liu, Yilin
N1 - Conference code: 136
PY - 2007
Y1 - 2007
N2 - Previous investigations indicated that addition of SiC particles produces a fine microstructure in Mg-Al alloys. This work investigates the microstructure of Mg-Al alloys containing small amount of SiC particles, with an emphasis on the interactions among Mg, Al and SiC It was found that the amount of SiC particles largely decreases after casting. It is very difficultly to detect these SiC particles under SEM and XRD due to their small sizes and amount. SEM and XRD experiments further show the existence of Mg17Al12 and Mg2Si phases. These Chinese scriptlike Mg2Si particles are surrounded by the Mg17Al12 particles which normally locate at the dendritic boundaries. Composition analysis shows carbon enrichment at the grain boundaries. In addition, some micro-cracks were observed close to the dendritic and grain boundaries. All these phenomena illustrate the occurrence of interactions among Mg, Al and SiC Based on these results, the effects of these interactions on the grain refinement are discussed.
AB - Previous investigations indicated that addition of SiC particles produces a fine microstructure in Mg-Al alloys. This work investigates the microstructure of Mg-Al alloys containing small amount of SiC particles, with an emphasis on the interactions among Mg, Al and SiC It was found that the amount of SiC particles largely decreases after casting. It is very difficultly to detect these SiC particles under SEM and XRD due to their small sizes and amount. SEM and XRD experiments further show the existence of Mg17Al12 and Mg2Si phases. These Chinese scriptlike Mg2Si particles are surrounded by the Mg17Al12 particles which normally locate at the dendritic boundaries. Composition analysis shows carbon enrichment at the grain boundaries. In addition, some micro-cracks were observed close to the dendritic and grain boundaries. All these phenomena illustrate the occurrence of interactions among Mg, Al and SiC Based on these results, the effects of these interactions on the grain refinement are discussed.
KW - Grain refinement
KW - Mg-Al alloy
KW - Nucleant
KW - SiC
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=34547875436&partnerID=8YFLogxK
M3 - Article in conference proceedings
AN - SCOPUS:34547875436
SN - 0873396634
SN - 9780873396639
T3 - Magnesium Technology
SP - 421
EP - 426
BT - Magnesium Technology 2007 - Proceedings of Symposium Sponsored by the Magnesium Committee of the Light Metals Division of TMS
A2 - Beals, Randy S.
A2 - Luo, Alan A.
A2 - Neelameggham, Neale R.
A2 - Pekguleryuz, Mihriban O.
PB - The Minerals, Metals & Materials Society
T2 - 136th Annual Meeting and Exhibition TMS 2007
Y2 - 25 February 2007 through 1 March 2007
ER -