The Effect of Heat Treatment and Aging Process on Microstructure and Mechanical Properties of A356 Aluminium Alloy Sections in Casting

摘要

Aluminium A356 alloy is widely used at automobile and aircraft industries in the form of cast component with varying section size. This study investigates how the microstructure and mechanical properties of different section size vary before and after heat treatment and aging processes. Aluminium ingot is melted using a furnace and poured in to the mold having mold cavities of varying dimensions. Cast components are heat treated as per ASTM standard B917-01 at a temperature of 537°C for 12 hours followed by a temperature of 155° for 5 hours. In order to investigate the effect of heat treatment and aging processes microstructure and mechanical properties such as impact strength, hardness, and tensile strength were analysed as-cast condition and after heat treatment and aging process.