AA6063 alloy is usually used in boat and ship
building. This is because of its interesting
properties such as lightweight and aesthetic
characteristics. In this work, the AA6063 alloy
was melted together with 0.5 to 2.5 wt% of Mn
and cast. The alloy was solutionised at 535 oC
for 6 hours and followed by water-quenching.
Artificial aging was performed on the alloy at
200 oC for 5 hours and followed by natural
aging for 14 days. Vickers micro-hardness
values indicated that the addition of Mn has
increased hardness of the AA6063 alloy. A
combination of artificial and natural aging has
increased hardness of the alloy containing 2.5
wt% Mn from 120 VHN to 160.09 VHN.
Therefore, the increase in its hardness could
lead to the improvement of its wear resistance.