Precipitation process along dislocations in Al-Cu-Mg alloy during artificial aging
作者： Zongqiang Feng , Yanqing Yang , Bin Huang , Ming Han , Xian Luo
DOI: 10.1016/J.MSEA.2010.09.069
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摘要: Abstract The heterogeneous nucleation and growth of precipitates at dislocations in Al–Cu–Mg alloy were investigated by examining sample aged 195 °C for various times from 10 min to 9 h. High resolution transmission electron microscopy (HRTEM) observations energy loss spectrometers (EELS) analysis show that the precipitation sequence S (Al 2 CuMg) phase along should be SSS → GPB zones → S (Type I) → S I) + S II). Type II precipitate can nucleate grow separately some dislocation parts which are unfavorable I formation, or transit during lateral means continuous stepped changing lattice orientations. Both these modes accomplished under action strain field. deviation extent is considered not with time but closely related interactions between transformation
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sci-hub.se 参考文章(32)
L. F. Mondolfo, Aluminum Alloys: Structure and Properties ,(1976)
Peter J. Goodhew, Electron microscopy and analysis ,(1975)
A. K. Mukhopadhyay, Coprecipitation of Ω and σ phases in Al-Cu-Mg-Mn alloys containing Ag and Si Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 33, pp. 3635- 3648 ,(2002) , 10.1007/S11661-002-0238-7
William D Nix, Theory of Dislocations ,(1968)
P. Ratchev, B. Verlinden, P. De Smet, P. Van Houtte, Precipitation hardening of anAl–4.2 wt% Mg–0.6 wt% Cu alloy Acta Materialia. ,vol. 46, pp. 3523- 3533 ,(1998) , 10.1016/S1359-6454(98)00033-0
S.A. Court, M.J. Mills, L. Kovarik, P.I. Gouma, C. Kisielowski, A HRTEM study of metastable phase formation in Al–Mg–Cu alloys during artificial aging Acta Materialia. ,vol. 52, pp. 2509- 2520 ,(2004) , 10.1016/J.ACTAMAT.2004.01.041
G.B. Winkelman, K. Raviprasad, B.C. Muddle, Orientation relationships and lattice matching for the S phase in Al–Cu–Mg alloys Acta Materialia. ,vol. 55, pp. 3213- 3228 ,(2007) , 10.1016/J.ACTAMAT.2007.01.011
J. P. Hirth, J. Lothe, T. Mura, Theory of Dislocations (2nd ed.) Journal of Applied Mechanics. ,vol. 50, pp. 476- 477 ,(1983) , 10.1115/1.3167075
C. Wolverton, Crystal structure and stability of complex precipitate phases in Al–Cu–Mg–(Si) and Al–Zn–Mg alloys Acta Materialia. ,vol. 49, pp. 3129- 3142 ,(2001) , 10.1016/S1359-6454(01)00229-4
Jérôme Majimel, G. Molénat, F. Danoix, D. Blavette, Gilles Lapasset, M.J. Casanove, A Study of the Hardening Precipitation in a 2650 Aluminium Alloy for Aeronautics Materials Science Forum. pp. 1025- 1030 ,(2002) , 10.4028/WWW.SCIENTIFIC.NET/MSF.396-402.1025