Growth Ledges on Silver-Segregated θ′ (Al2Cu) Precipitates
作者： Julian Rosalie , Laure Bourgeois
DOI: 10.1007/978-3-319-65136-1_64
关键词:
摘要: The interfacial structure and composition of θ′ (Al2Cu) precipitates in Al-0.9at.%Cu-0.9at.%Ag alloys were examined using high resolution electron microscopy. High angle annular dark field scanning transmission microscope (HAADF-STEM) images showed the presence a silver(Ag)-rich bi-layer on coherent (100) θ′-Al interfaces (1). Despite this layer, growth ledges observed phase thickening was able to proceed via step height 0.5c(θ′).
springer.com
sci-hub.st 参考文章(16)
R.C. Pond, J.P. Hirth, Defects at Surfaces and Interfaces Solid State Physics. ,vol. 47, pp. 287- 365 ,(1994) , 10.1016/S0081-1947(08)60641-4
Laure Bourgeois, Christian Dwyer, Matthew Weyland, Jian-Feng Nie, Barrington C. Muddle, Structure and energetics of the coherent interface between the θ′ precipitate phase and aluminium in Al–Cu Acta Materialia. ,vol. 59, pp. 7043- 7050 ,(2011) , 10.1016/J.ACTAMAT.2011.07.059
K. Hono, N. Sano, S.S. Babu, R. Okano, T. Sakurai, Atom probe study of the precipitation process in AlCuMgAg alloys Acta Metallurgica Et Materialia. ,vol. 41, pp. 829- 838 ,(1993) , 10.1016/0956-7151(93)90016-L
C.R Hutchinson, X Fan, S.J Pennycook, G.J Shiflet, On the origin of the high coarsening resistance of Ω plates in Al–Cu–Mg–Ag Alloys Acta Materialia. ,vol. 49, pp. 2827- 2841 ,(2001) , 10.1016/S1359-6454(01)00155-0
R.C. Pond, F. Sarrazit, Diffusive fluxes associated with interfacial defeet motion and interaction Interface Science. ,vol. 4, pp. 99- 118 ,(1997) , 10.1007/BF00200841
J.P. Hirth, Dislocations, steps and disconnections at interfaces Journal of Physics and Chemistry of Solids. ,vol. 55, pp. 985- 989 ,(1994) , 10.1016/0022-3697(94)90118-X
W.M. Stobbs, G.R. Purdy, The elastic accommodation of semicoherent θ′ in Al4wt.%Cu alloy Acta Metallurgica. ,vol. 26, pp. 1069- 1081 ,(1978) , 10.1016/0001-6160(78)90135-9
Jian Feng Nie, Barry C. Muddle, Ian J. Polmear, The Effect of Precipitate Shape and Orientation on Dispersion Strengthening in High Strength Aluminium Alloys Materials Science Forum. ,vol. 217-222, pp. 1257- 1262 ,(1996) , 10.4028/WWW.SCIENTIFIC.NET/MSF.217-222.1257
L. M. Brown, J. R. Dryden, V. Perovic, G. R. Purdy, On the role of elastic interactions in the nucleation and growth of ledges Metallurgical Transactions A. ,vol. 22, pp. 1159- 1164 ,(1991) , 10.1007/BF02660647
Laure Bourgeois, Christian Dwyer, Matthew Weyland, Jian-Feng Nie, Barrington C. Muddle, The magic thicknesses of θ′ precipitates in Sn-microalloyed Al-Cu Acta Materialia. ,vol. 60, pp. 633- 644 ,(2012) , 10.1016/J.ACTAMAT.2011.10.015