Alloying Behavior of Rare-Earth Er in Al-Cu-Mg-Ag Alloy


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The alloying behavior of RE element of Er in Al-Cu-Mg-Ag alloys with addition of Er were investigated in this paper. During solidification ,most of element Er segregated at grain boundaries in the form of primary Al8Cu4Er phase and part of Er dissolved in the α-Al matrix. After rolling, Al8Cu4Er phase could be fragmentated into dispersed particle which leaded to an increase of the grain boundary strengthening . TEM observation and tensile strength test showed that small addition of Er retarded the precipitation of Ω phase and prolonged the time corresponding to the peak aging,with a remarkable increase of ductility.



Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.




Y. T. Li et al., "Alloying Behavior of Rare-Earth Er in Al-Cu-Mg-Ag Alloy", Materials Science Forum, Vols. 546-549, pp. 941-946, 2007

Online since:

May 2007




[1] Polmear, I.J., Ringer, S.P. Japan Inst. Light Metal Vol. 50(2000), p.633.

[2] L.S. Toropova, D.G. Eskin, M.L. Kharakterova. Gordon and Breech, The Netherlands, (1998).

[3] Pan Fusheng, Zhou Shouze, Shi Qigong, ect. Light Alloy Fabrication Technology , Vol. 3(1990), p.1.

[4] Kendig K L , Miracle D B. Acta Materialia , Vol. 50 (2002), p.4165.

[5] Zhao Zhongkui , Zhou Tietao , Liu Peiying , ect . Rare Metal Materials and Engineering , Vol. 33 (2004),p.1108.

[6] Fu Jingbo , Nie Zuoren , Yang Junjun , ect . Chinese Journal of Rare Metals , Vol. 29 (2005) , p.558.

[7] Yang Junjun, Nie Zuoren, Jin Tounan, ect. Journal of the Chinese Rare Earth Society, 20(2002), p.159.

[8] Nie Zuoren , Jin Tounan , Fu Jingbo , et al. Materials Science Forum, Vol. 396-402( 2002), p.1731.

[9] Yang Junjun, Nie Zuoren, Jin Tounan, etal. Trans. ofNonf. Met. Sci. of China, Vol. 13(2003), p.1035.

[10] Li Daoyun. Foundry, Vol. 9(1985), p.27.

[11] I.J. Polmear, G. Pons, Y. Barbaux, ectal. Mater. Sci. Technol., Vol. 15(1999), p.861.

[12] A. K. Mukhopadhyay. Materials Transactions, JIM, Vol. 38(1997), p.478.

[13] S.P. Ringer, K. Hono , I.J. Polmear and ect al. Acta Mater. ,Vol. 44(1996), p.1883.

[14] Mondolfo L.F. London : Buttersworths, (1976), 497.

[15] J.T. Vietz I.J. Polmear. Inst. Metals, Vol. 94(1966), p.410.

[16] Reich, L. , Murayama, M., Hono, K. Acta Materialia , Vol. 46(1998), p.6053.

[17] Taylor J.A., Parker B.A., Polmear I.J. Metal Science, Vol. 12(1978), p.478.

[18] Garg, A., Howe, J.M. Acta Metallurgica et Materialia, Vol. 39(1991), p. (1925).

[19] Hono, K. , Sakurai, T., Polmear, I.J. Materials Science Forum, Vol. 189-190(1995), p.249.