Precipitation Hardening Behavior of Al-4wt.%Cu Alloys Aged at Low Temperature under High Magnetic Field


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A 10-T magnetic field was introduced to investigate precipitation behavior of Al-4wt.%Cu alloys during short time aging at 130°C. DSC, Vickers micro-hardness tests, EPMA and TEM were used to characterize aging process. The results show that high magnetic field improves the diffusion of Cu atom, lowers the stability of G.P.( I )zone and speeds up its solution, and lowers the precipitation temperature of the phases, thus accelerates the ageing course during the early stage at low temperature. Furthermore the high magnetic field has influence on the size of the θ″-phase. The micro-hardness of the field-treated specimen is always higher than the non-field ones, which indicates the high magnetic field strengthens the hardening effect.



Materials Science Forum (Volumes 561-565)

Main Theme:

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee




L. Y. Cui et al., "Precipitation Hardening Behavior of Al-4wt.%Cu Alloys Aged at Low Temperature under High Magnetic Field", Materials Science Forum, Vols. 561-565, pp. 171-174, 2007

Online since:

October 2007




[1] M. Karlik, B. Jouffrey: Acta Materialia Vol. 45(1997), p.3251.

[2] A. Fontaine, P. Lagarde, D. Raoux and J. M. Esteva:J. Phys. F (Met. Phys. ). Vol. 9(1979), p.2143.

[3] K. Osamura, Y. Murakami, T. Sato, T. Takahashi, T. Abe and K. Hirano: Acta Metallurgica Vol. 31(1983), p.1669.

[4] T. J. Bastow, L. Bourgeois and M. Forsyth: Acta Materialia Vol. 51(2005), p.4621.

[5] S. P. Ringer, K. Hono and T. Sakurai: Applied Surface Science Vol. 87-88(1995), p.223.

[6] S. K. Son, M. Takeda, M. Mitome, Y. Bandob and T. Endo: Materials Letters Vol. 59(2005), p.629.

[7] S. P. Ringer,K. Hono: Materials Characterization Vol. 44(2000), p.101.

[8] J. M. Silcock, H. M. Flower: Scripta Materialia Vol. 46(2002), p.389.

[9] Y. D. Zhang, C. Esling, M. L. Gong, G. Vincent, X. Zhao and L. Zuo: Scripta Materialia 2006), p.1897.

[10] Y. W. Ma, S. Awaji, K. Watanabe, M. Matsumoto and N. Kobayash: Solid State Communications Vol. 113(2000), p.671.

[11] S. Asai, K. S. Sassa and M. Tahashi: Science and Technology of Advanced Materials Vol. 4(2003), p.455.

[12] X. T. Liu, J. Z. Cui and F. X. Yu: Journal of Material Science Vol. 39(2004), p.2935.

[13] M. Takeda, Y. Maeda, A. Yoshida, K. Yabuta, S. Konuma and T. Endo: Scripta Materialia Vol. 41(1999), p.643.


[14] M. J. Starink, P. V. Mourik: materials Science and Engineering Vol. A156(1992), p.183.

[15] M. Avrami:J. Chem. Phys. Vol. 7(1939), p.1103.

[16] M. Avrami:J. Chem. Phys. Vol. 8(1940), p.212.

[17] M. Avrami:J. Chem. Phys. Vol. 9(1941), p.177.

[18] T. Konno, J, K. Hiraga and M. Kawasaki: Scripta Materialia Vol. 44(2001), p.2303.

[19] J. W. Martin: Micromechanisms in particle-hardened alloys (Cambridge University Press, New York 1980).