Study of the effect of variation of zirconium content and ageing through precipitation hardening process on mechanical properties of aluminum alloys (Al-Zr).

Precipitation hardening is a heat treatment process to increase the strength of aluminum alloys with solution heat treatment, quenching and aging processes. This literature study aims to determine how aging from the precipitation hardening process affects aluminum zirconium alloy material on mechanical properties with varying temperature and aging time. The analysis was carried out using secondary data obtained from research published before in various journals. The research material is aluminum zirconium alloy with 0.1-0.4% zirconium composition and above 99.5% aluminum composition. The temperatures used in this study were 375°C, 400°C, and 425°C, and the aging time was up to 400 hours. Based on studies from various literature, it is found that the aging process gets an increase in the hardness value of aluminum alloy materials. The results of this study will be one of the references in further research. [ABSTRACT FROM AUTHOR]