Atomic Bonding of Precipitate and Properties of Al-Cu-Mg Alloy


Article Preview

Atomic bonding of the GPB zone and S′′ phase of Al-Cu-Mg alloys in early aging stage are calculated using the empirical electron theory (EET) in Solid. The results show that not only the covalence bond-net is very strong in GPB zone, but the whole covalence bond energy of S′′ phase is also very large, all the primary bond-net framework of these precipitates can consolidate the matrix of alloy. Phase transformation from GPB zone to S′′ phase is explained reasonably based on atomic bonding and total binding capacity of Al and Cu atoms in these precipitates.



Materials Science Forum (Volumes 539-543)

Main Theme:

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran




Y. J. Gao et al., "Atomic Bonding of Precipitate and Properties of Al-Cu-Mg Alloy", Materials Science Forum, Vols. 539-543, pp. 417-422, 2007

Online since:

March 2007




[1] Simon P. Ringer, Kazuhiro Hono, Toshio Sakurai: Acta Mater. 36(1997), pp.517-521.

[2] Bardi. F, Cabibbo M. Evangelista E: Mater. Sci. Eng. A339(2003), pp.43-52.

[3] B P Huang, Zheng Z Q : Acta mater. 46 (1998), pp.4381-4393.

[4] S.P. Ringer,K. Hong I.J. Polmear,T. Sakurai. : Acta Metallurgica. 44(1995), pp.1883-1898.

[5] Wang S.C. Starink M.J. : Materials science and engineering A386(2004), pp.156-163.

[6] Zhang Rui-lin, The Empirical Electron Theory of Solids and Molecules(Jilin Science and Technology Press, China 1993).

[7] L. Pauling, The Nature of The Chemical Bond. (Corrnell University Press, USA 1960).

[8] Gao Ying-jun, Huang Chuanggao : Materials Transactions. 46(2005), pp.1148-1153.

[9] Guo Yong-quan, Yu Ruihuang, and Zhang Ruilin, J. Phys. Chem. B, 102(1998), pp.9-16.

[10] Liu Zhilin, Li Zhilin and Sun Zhenguo: Metall. Mater. Trans. A. 30(1999), pp.2757-2766.


[11] Liu Zhi-lin: Valence Electron Structure and Properties of Interface(Science and Technology Press, Beijing 2002).

[12] Gao Ying-jun, Ban Dong-mei: Trans Nonferrous Met Soc China, 14(2004), pp.922-927.

[13] GaoYingjun, Zhong Xiaping: The Chinese J. Nonferrous Metals, 14(2004), pp.730-734.

[14] Liu Wei-dong, Liu Zhi-lin: Rare Metal Materials and Engineering. 32(2003), pp.902-906. Version 2006-1-12.