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http://dx.doi.org/10.7777/jkfs.2013.33.3.113

Effects of Zn and Mg Amounts on the Properties of High Thermal Conductivity Al-Zn-Mg-Fe Alloys for Die Casting  

Kim, Ki-Tae (Foundry Technology Center, Korea Institute of Industrial Technology)
Lim, Young-Suk (Foundry Technology Center, Korea Institute of Industrial Technology)
Shin, Je-Sik (Foundry Technology Center, Korea Institute of Industrial Technology)
Ko, Se-Hyun (Foundry Technology Center, Korea Institute of Industrial Technology)
Kim, Jeong-Min (Dept. of Applied Materials Eng., Hanbat National University)
Publication Information
Journal of Korea Foundry Society / v.33, no.3, 2013 , pp. 113-121 More about this Journal
Abstract
The effects of Zn and Mg amounts on the solidification characteristics, microstructure, thermal conductivity and tensile strength of Al-Zn-Mg-Fe alloys were investigated for the development of high thermal conductivity aluminium alloys for die casting. Zn and Mg amounts in Al-Zn-Mg-Fe alloys had a little effect on the liquidus / solidus temperature, the latent heat for solidification and the fluidity of Al-Zn-Mg-Fe alloys. Thermo-physical modelling of Al-Zn-Mg-Fe alloys by JMatPro program showed $MgZn_2$, AlCuMgZn and Al3Fe phases on microstructure of their alloys. Increase of Zn and Mg amounts in Al-Zn-Mg-Fe alloys resulted in gradual reduction of the thermal conductivity of their alloys. Increase of Mg amounts in Al-2%Zn-Mg-Fe alloys had little effect on the tensile strength of their alloys, but increase of Mg amounts in Al-4%Zn-Mg-Fe alloys resulted in steep increase of the tensile strength of their alloys.
Keywords
Aluminum alloy; Die casting; Thermal conductivity; Tensile strength;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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