INFLUENCE OF PULSED MAGNETIC FIELD ON MICROSTRUC- TURES AND MACRO-SEGREGATION IN 2124 Al-ALLOY
来源期刊：Acta Metallurgica Sinica2002年第4期
论文作者：G.M.Lu B.J.Zhang Q.X.Ba C.Y.Ban J.Z.Cui
Key words：aluminium alloy; pulsed magnetic field; microstructure; segrega-tion;
Abstract: The structures and macro-segregation of 2124 Al-alloy were studied when a pulsedmagnetic field (PMF) was applied during solidification. It is found through experi-ments that a remarkable change occurs in the solidification structures of 2124 Al-alloyunder pulsed magnetic field. The eutectic phase at grain boundaries change from thickcontinuous eutectic network to thin discontinuous one, and the distribution of soluteelements was also homogenized. The typical negative segregation phenomenon of Cu incommon solidification condition was restrained, and the segregation of Mg decreased.
G.M.Lu1，B.J.Zhang1，Q.X.Ba1，C.Y.Ban1，J.Z.Cui1
(1.P.O. Box 317, The Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education,Northeastern University, Shenyang 110004, China)
Abstract:The structures and macro-segregation of 2124 Al-alloy were studied when a pulsedmagnetic field (PMF) was applied during solidification. It is found through experi-ments that a remarkable change occurs in the solidification structures of 2124 Al-alloyunder pulsed magnetic field. The eutectic phase at grain boundaries change from thickcontinuous eutectic network to thin discontinuous one, and the distribution of soluteelements was also homogenized. The typical negative segregation phenomenon of Cu incommon solidification condition was restrained, and the segregation of Mg decreased.
Key words:aluminium alloy; pulsed magnetic field; microstructure; segrega-tion;
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