similar to the iron-based products processing.To
fabricate fully dense Al-based materials by powder metallurgy,
conventional consolidation methods have been commonly used,
including sintering and hot isostatic pressing(HIP) [6], extrusion
[7], forging [8] and rolling [9]. These processes need large amounts
of energy and have higher operating requirements.Inrecentyears
the semi-solid powder forging has been attractingan increased
interest due to short processing and low energy consumption.
Actually,thesemi-solid powder forging is one kind of semi-solid
powder processing [10], which combines the benefits of the semi-solid forming and powder metallurgy.Ingeneral,the semi-solid
powder forging involves four basic steps:powder preparation,
powder pre-compaction,heating and semi-solidforging.This
technique has been successfully applied in processing alloy materials,suchasAl6061 [10] and Al–Ti [11], and composite materials, including Al–SiC [12] and Al-CNT [13].