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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 13    No. 3    June 2003

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Development on research of advanced rare-earth aluminum alloy
NIE Zuo-ren(聂祚仁), JIN Tou-nan(金头男),
ZOU Jing-xia(邹景霞),FU Jing-bo(付静波),
YANG Jun-jun(杨军军), ZUO Tie-yong (左铁镛)

School of Materials Science and Engineering,
Beijing University of Technology, Beijing 100022, China

Abstract:The active mechanisms of rare earth element erbium ( Er ) in part of aluminum alloys were investigated. Based on the investigation of the effect of the unitary rare earth elements (Er, La, Y, Ce, Nd, Gd, and Sc) and the transition element zirconium on the aluminum alloys, it is concluded that, with Er alloyed, high purity aluminum and Al-Mg alloys are featured with refined grain structure, superior heat stability and even higher hardness or tensile strength with unchanged ductility; but Er is not beneficial to the mechanical property of Al-Cu alloy, so is Sc. It may also be concluded, to most of the aluminum alloys, Er can be an effective alloying element, like Sc; and for the lower price of Er, the cost of modifying aluminum alloys by Er will be reduced.

 

Key words:  aluminum alloy; rare earth; erbium; scandium; misch metal; Al3Er

ISSN 1672-7029
CN 43-1423/U

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