Abstracts Book - IMRC 2018

• SE1-O014 Invited Talk
THE EFFECT OF Sn AND Ca ADDITION ON MECHANICAL
PROPERTIES AND IGNITION BEHAVIOUR OF MAGNESIUM ALLOYS
SUBJECTED TO DIRECT EXTRUSION PROCESS
Young Min Kim 1,2 , Yohan Go 3 , Jong Sik Suh 2 , Jun Ho Bae 2 , Byeong-Chan Suh 2 , Bong Sun You 2
1 Korea Institute of Geoscience and Mineral Resources, , South Korea. 2 Korea Institute of
Materials Science, Magnesium Department, South Korea. 3 Korea University of Science and
Technology, Advanced Materials Engineering, South Korea.
Magnesium alloys are recognized as promising materials for lightweight
transportation vehicles due to the lightest density and good specific strength
among structural metallic materials. Particularly in aircraft application, where
safety and high strength are required, magnesium alloys must have both high
ignition resistant and high absolute yield strength. We have recently reported
that the addition of Ca and Y greatly improves ignition resistance and corrosion
resistance of magnesium alloys. Moreover, Sn addition leads to complete
dissolution of Mg 17 Al 12 eutectic phase into Mg matrix and greatly improves the
yield strength through the formation of fine Mg 2 Sn precipitates. On the other
hand, when a large amount of Sn and Ca is added, the ductility of the
magnesium alloys greatly decrease by the formation of coarse Mg-Sn-Ca
eutectic phase. In this study, the optimization of chemical compositions and
extrusion process parameters for the application to an aircraft interior
component is carried out.
Acknowledgment:
This work was supported by the National Research Council of Science &
Technology (NST) grant by the Korea government (MSIP) (No.CRC-15-06-KIGAM).
Keywords: Magnesium, Extrusion, Mechanical Properties
Presenting authors email: youngmk77@gmail.com