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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 7    No. 1    March 1997

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MICROSTRUCTURAL FEATURES OF RSAl BASED THERMAL STRENGTHENED ALLOYS
Wang Jianqiang; Geng Ping; Zhang Baojin; Zeng Meiguang

Department of Materials Science; Northeastern University; Shenyang 110006

Abstract:To develop high temperature aluminium alloys for commercial and military aircraft, the as quenched microstructural features of rapidly solidified Al Fe V Si alloys were examined with XRD, TEM and Mssbauer spectroscopy. The results show that the microstructure of the alloy consists of microcellular α Al and nearly spherical α Al 13 (Fe, V) 3Si nanoscale particles. There are three kinds of Fe atomic configurations in as quenched state. The values of matrix lattice parameter decreases with the increasing of Fe solution concentration. The structure of α Al 13 (Fe, V) 3 Si particles is bcc and its a 0 is of 1.260 nm.

 

Key words: Al Fe V Si alloys dispersive particles atomic configuration lattice parameter

ISSN 1672-7029
CN 43-1423/U

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