Abstract
Al-Zr alloys are qualified as high electric conductors having high heat resistance by their peculiar recrystallization characteristics. However, there are few reports on their manufacturing techniques covering melting, casting, and heat-treatment procedures. The effects of casting temperature, mass of ingots, and heat treatment on recrystallization characteristics of Al-Zr alloys were clear as shown in the previous reports. Preferable casting and heat-treatment procedures were of importance in raising recrystallization temperatures of Al-Zr alloys containing silicon.
In this study, the effects of silicon content on electric conductivity and heat resistance of Al-0.2% Zr-0.1% Fe alloy were investigated. It was also concerned with the effects of two-stepped heat treatment on the above properties.
