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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 6    No. 4    December 1996

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HARDENING OF RAPID SOLIDIFICATION Al-Fe-V-Si ALLOY EXPOSED AT ELEVATED TEMPERATURE
Xu Yiheng, Long Chunguang, Li Songrui, Li Wenxian, Yang Shibao

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

ISSN 1672-7029
CN 43-1423/U

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