Determination of Zr Inoculation Effect on Improving Thermal Resistivity of EC Grade Aluminum

摘要

In this article manufacturing process details of thermal resistant alloy have been presented. Creep is triggered by over heated conductors due to the excessive usage so that considerable very dangerous sag occurs. Four types of Al-Zr based alloys containing within the range 0.01-0.04 wt% Zr, and without Zr addition were produced to prepare a heat resistive conductor wire in three steps, thereby casting, and after extrusion, finally cold drawing. By using optical microscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy, the effects of Zr as microalloying element on the microstructure of the alloys were investigated. The mechanical properties of the alloys under 120 and 150 A degrees C conditions were studied in order to reveal their heat resistance properties.