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http://dx.doi.org/10.7777/jkfs.2012.32.2.075

Microstructure Evolution of Semi Solid AZ31+(Ca) Magnesium Alloys during Reheating Process  

Kim, Hee-Kyung (i-Cube Center, Engineering Research Institute, Gyeongsang National University)
Seong, Bong-Hak (i-Cube Center, Engineering Research Institute, Gyeongsang National University)
Van, Guen-Ho (i-Cube Center, Engineering Research Institute, Gyeongsang National University)
Kim, Dae-Hwan (i-Cube Center, Engineering Research Institute, Gyeongsang National University)
Seong, Yeong-Rok (HEESUNG PRECISION. Ltd.)
Lim, Su-Gun (i-Cube Center, Engineering Research Institute, Gyeongsang National University)
Publication Information
Journal of Korea Foundry Society / v.32, no.2, 2012 , pp. 75-80 More about this Journal
Abstract
In this study, we are aimed to prevent grain growth of semi-solid AZ31 magnesium alloys during reheating process. The semi-solid AZ31+(Ca) billets were investigated by using metallographic analysis, X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy in order to elucidate the effect of Ca addition during reheating process. The grain growth of semi-solid AZ31+(Ca) billet was reduced with increasing Ca content during reheating. The grain size of AZ31+(Ca) billet decreased with increasing volume fraction of Al2Ca particles. The grain growth rate constant K calculated by Oswald ripening LSW theory in AZ31+1.5wt.% Ca billet was the lowest 129.
Keywords
AZ31 Mg alloy; Cooling plate; Semi-solid metal; Reheating; Microstructure;
Citations & Related Records
Times Cited By KSCI : 11  (Citation Analysis)
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