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http://dx.doi.org/10.3365/KJMM.2010.48.10.936

A Study of the Development of a High-Strength Al-Zn Based Alloy for Die Casting I  

Shin, Sang-Soo (Green Technology Center, Korea Institute of Industrial Technology)
Yeom, Gil-Yong (ECO-Diecast Korea Co., Ltd.)
Kim, Eok-Soo (Green Technology Center, Korea Institute of Industrial Technology)
Lim, Kyung-Mook (Green Technology Center, Korea Institute of Industrial Technology)
Publication Information
Korean Journal of Metals and Materials / v.48, no.10, 2010 , pp. 936-941 More about this Journal
Abstract
Al-Zn based alloys are the most common types of wrought Al alloys. Although Al-Zn alloys have high strength, they cannot be applied to a conventional casting process. In this study, Al-Zn-based alloys applicable to a die casting process were developed successfully. The developed Al-45 wt% Zn-based alloys showed a fine equiaxed grain structure and high strength. A fine equiaxed grain having an average size of $25{\mu}m$ was obtained by the die casting process. The UTS and elongation of the new alloy are 475 MPa and ~3.5%, respectively. In addition, we elucidate the effect of a Zn addition on variations in different mechanical properties and the microstructure characteristics of (Al96.3-xZnxCu3Si0.4Fe0.3) x=20, 30, 40, and 45 wt% alloys fabricated by a die casting process.
Keywords
Al-Zn alloys; die casting process; high strength; fine grain size; lamellar;
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