DSC and TEM Study of Al-Cu-Mg-Ag Alloy Ageing at Low and Elevated Temperature


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Microstructural characterization of Al-Cu-Mg-Ag alloy ageing at low and elevated temperature were investigated by differential scanning calorimeter (DSC) and transmission electron microscopy (TEM). The results show that the precipitation sequence is significantly influenced by the ageing temperature. With prolonging of ageing at 65°C, G.P. zones on the plane of {100}α separates out with no precipitation of Ω phase. After 10h ageing at 160°C,the phase of Ω separates out and dominant the microstructure, while a small quantity of θ′separates out as well.



Advanced Materials Research (Volumes 295-297)

Edited by:

Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu






H. W. Liu et al., "DSC and TEM Study of Al-Cu-Mg-Ag Alloy Ageing at Low and Elevated Temperature", Advanced Materials Research, Vols. 295-297, pp. 1225-1229, 2011

Online since:

July 2011




[1] I.J. Polmear , G. Pons and Y.B.H. Octor: Evaluation of creep resistant Al-Cu-Mg-Ag alloys. Materials Science and Technology Vol. 15 (1999), p.861.

DOI: 10.1179/026708399101506599

[2] X.Y. Liu , Q.L. Pan , C.G. Lu, Y.B. He, W.B. Li , and W.J. Liang: Microstructure and mechanical properties of Al–Cu–Mg–Mn–Zr alloy with trace amounts of Ag. Materials Science and Engineering A 525(2009), p.128.

DOI: 10.1016/j.msea.2009.06.042

[3] X. Qing-kun , L. Zhi-yi , and L. Yun-tao: Microstructure and properties of Al-Cu-Mg-Ag alloy exposed at 200℃ with and without stress. Trans. Nonferrous Met. Soc. China 18(2008), p.789.

DOI: 10.1016/s1003-6326(08)60136-3

[4] D. Bakavos, P.B. Prangnell, B. Bes, and F. Eberl: The effect of silver on microstructural evolution in two 2xxx series Al-alloys with a high Cu: Mg ratio during ageing to a T8 temper Materials Science and Engineering A 491(2008), p.214.

DOI: 10.1016/j.msea.2008.03.014

[5] B.M. Gable, G.J. Shiflet, and E.A. Starke: Alloy development for the enhanced stability of Ω precipitates in Al-Cu-Mg-Ag alloys. Metallurgical and materials transactions A 37A(2006), p.1091.

DOI: 10.1007/s11661-006-1079-6

[6] V.V. Teleshov, E.Y. Kaputkin, A.P. Golovleva, and N.P. Kosmacheva: Temperature ranges of phase transformations and mechanical properties of alloys of the Al-Cu-Mg-Ag system with various Cu/Mg ratios. Metal Science and Heat Treatment Vol. 47(2005).

DOI: 10.1007/s11041-005-0042-2

[7] R.N. Lumley, A.J. Morton, and I.J. Polmear: Enhanced creep performance in an Al-Cu-Mg-Ag alloy through underageing. Acta Materialia Vol. 50(2002), p.3597.

DOI: 10.1016/s1359-6454(02)00164-7

[8] L. Reich, M. Murayama, and K. Hono: Evolution of Ω phase in an Al-Cu-Mg-Ag alloy - A three-dimensional atom probe study. Acta Materialia Vol. 46(1998), p.6053.

DOI: 10.1016/s1359-6454(98)00280-8

[9] Q. Li, and R.N. Shenoy: DSC and TEM characterizations of thermal stability of an Al-Cu-Mg-Ag alloy. Journal of Materials Science Vol. 32(1997), p.3401.

[10] Ka. Hono, N. Sano, S.S. Babu, R. Okano, and T. Sakurai: Atom probe study of the precipitation process in an Al-Cu-Mg-Ag alloys. Acta Metallurgica Et Materialia Vol. 41(1993), p.829.

DOI: 10.1016/0956-7151(93)90016-l

[11] I.J. Polmear. Light alloys: From Traditional Alloys to Nanocrystals.

[12] R.K.W. Marceau, G. Sha, R.N. Lumley, and S.P. Ringer: Evolution of solute clustering in Al-Cu-Mg alloys during secondary ageing. Acta Materialia Vol. 58(2010), p.1795.

DOI: 10.1016/j.actamat.2009.11.021

[13] O. Beffort, C. Solenthaler, P.J. Uggowitzer, and M.O. Speidel: High toughness and high strength spray-deposited AlCuMgAg-base alloys for use at moderately elevated temperatures. Materials Science and Engineering A(1995), p.121.

DOI: 10.1016/0921-5093(94)09642-2

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