HARDENING OF RAPID SOLIDIFICATION Al-Fe-V-Si ALLOY EXPOSED AT ELEVATED TEMPERATURE
(Department of Materials Science and Engineering,Central South University of Technology, Changsha 410083)
Abstract: Rapidly solidified(RS) FVS0812 alloy powder was obtained by means of multi-stage RS powder-making device. The effect of elevated temperature (200~500℃) on the mechanical properties of the cold deformed specimens was investigated. The results showed that the strength increases significantly after being exposed at 200~500℃. This abnormal behaviour can be attributed to the clusters of the transition metal solute—iron in aluminum matrix, forming during the hot deformation or heat treatment.
Key words: rapid solidification cluster Al alloy for elevated temperature applications