The Effect of Zr element on the Properties of Continuous Casting and Rolling Materials for Al-0.11 wt.%Fe Alloy

Al-0.11 Fe계 합금에서의 Zr원소 미세첨가에 따른 연속주조재 및 압연재의 특성

In order to develop non-heated STAl(super thermal resistant Aluminum alloy) for ampacity gain conductor, the systematic research was carried out. Especially, the effect of a very small amount of Zr element in EC grade Al ingot on mechanical and electrical properties was our priority. As a result, it was found that the strength and recrystallization temperature of designed alloy was gradually increased with Zr addition up to 0.3wt.%. However, the electric conductivity showed no drastic change. The tensile strength and recrystalliztion temperature, $17.75\;kgf/mm^2$ and $420^{\circ}C$, was obtained at 0.3 wt.% Zr addition, respectively.