Abstract
The effect of post-ECAP aging on the microstructure, hardness and impact behaviour of peak aged 6061 aluminium alloy after a single pass was studied in this work. SEM observations revealed the presence of the strengthening phase of Mg2Si of varying morphology within the matrix of the as-received, T6 tempered alloy and post-ECAP aged samples. The ECAPed alloy showed a significant increase in hardness with a decline in notch toughness than the as-received alloy. Application of post-ECAP aging on the ECAPed alloy resulted in a further increase in the hardness and notch toughness of the post-ECAP aged alloy when compared with the ECAPed alloy. This can be ascribed to the precipitation of the strengthening phase which predominates the recovery of the matrix during the post-ECAP aging process. Hence, post-ECAP artificial aging resulted in an optimum combination of properties of the investigated 6061 aluminium alloy.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
