Study Of Low Temperature Aging Characteristics & Microstructure Of Al-0.9mg-0.5si-1.10 Fe-0.35ca Al- Alloy
Aging characteristics of Al-0.9Mg-0.5Si-1.1Fe-0.35Ca Aluminum alloy is investigated. The aim of this work is
to determine the effect of low temperature heat treatments of Al-0.9Mg-0.5Si-1.10Fe-0.35Ca aluminum alloy on hardness
and aging characteristics .The specimens are solutionized at 510 ºC for 3 hours 30 minutes into the muffle furnace. After that
the specimens are artificially aged at 110 ºC, 120 ºC and 130 ºC for different times of intervals. The results show that as the
temperature increases the value of hardness also increases. The variations in time and temperature during heat treatment have
improved the strength of the alloy, whereas the ductility has decreased. The exploratory work has uncovered that time and
temperature assumes an essential part in the precipitation procedure of the aluminum-alloy. The presence of precipitates of
Mg2Si is responsible for the improved hardness. The peak hardness values are found to be 34 BHN, 37 BHN and 41 BHN at
110 ºC, 120 ºC and 130 ºC respectively.
Keywords— Aging, Hardness, Temperature, Time and Muffle Furnace.