Evolution Of Precipitate Morphology During Extrusion In Mg ZK60A Alloy

In this study, a continuously casted ZK60A magnesium alloy (Mg-Zn-Zr) was extruded in two different extrusion ratios, 6:1 and 10:1. The evolution of precipitates was investigated on the two extruded materials and compared with that of as-casted material. The microstructural analysis was performed by...

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Bibliographic Details
Published in:Archives of metallurgy and materials 2015-06, Vol.60 (2), p.1423-1426
Main Authors: Park, J., Jung, K.H., Lee, G.A., Kawasaki, M., Ahn, B.
Format: Article
Language:English
Subjects:
extrusion
magnesium alloy
precipitation
ZK60A
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Summary:In this study, a continuously casted ZK60A magnesium alloy (Mg-Zn-Zr) was extruded in two different extrusion ratios, 6:1 and 10:1. The evolution of precipitates was investigated on the two extruded materials and compared with that of as-casted material. The microstructural analysis was performed by electron backscatter diffraction and transmission electron microscopy, and the compositional information was obtained using energy-dispersive X-ray spectroscopy. Several distinct morphologies of precipitates were observed, such as dot, rod, and disk shaped. The formation mechanisms of those precipitates were discussed with respect to the heat and strain during the extrusion process.
ISSN:2300-1909
1733-3490
2300-1909
DOI:10.1515/amm-2015-0145