Precipitation kinetic of Al3(Sc,Zr) dispersoids in aluminium

被引：142
作者：
Lefebvre, W. [1 ]
Danoix, F. [1 ]
Hallem, H. [2 ]
Forbord, B. [3 ]
Bostel, A. [1 ]
Marthinsen, K. [4 ]
机构：
[1] Univ Rouen, Inst Mat Rouen, UMR 6634, Grp Phys Mat, F-76801 St Etienne, France
[2] Raufoss Technol & Ind Management, N-2831 Raufoss, Norway
[3] SINTEF Mat & Chem, N-7465 Trondheim, Norway
[4] Norwegian Inst Sci & Technol, N-7491 Trondheim, Norway
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 470卷 / 1-2期
关键词：
Core-shell; Dispersoids; Al-Zr-Sc; Diffusion; Ramp; Heating; Dispersoid; ATOM-PROBE; ALLOYS; EVOLUTION; SCANDIUM;
D O I：
10.1016/j.jallcom.2008.02.043
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The non-isothermal formation of Sc- and Zr-containing dispersoids in Al-Zr-Sc ternary alloys has been investigated by atom probe tomography (APT). In the early stages of precipitation, a high number density of Sc-rich clusters form. These clusters subsequently transform into Al3Sc particles with a L1(2) structure. When Zr diffusion becomes significant, Zr atoms are found to segregate to Al3Sc/alpha-Al matrix interfaces. Further annealing at 748 K gives rise to a duplex core/shell structure. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：107 / 110
页数：4
相关论文
共 17 条
[1]  
[Anonymous], THESIS NW U
[2]  
Bakker H., 1990, DIFFUSION SOLID META, V26
[3]   Effects of incidence angles of ions on the mass resolution of an energy compensated 3D atom probe [J].
Bémont, E ;
Bostel, A ;
Bouet, M ;
Da Costa, G ;
Chambreland, S ;
Deconihout, B ;
Hono, K .
ULTRAMICROSCOPY, 2003, 95 (1-4) :231-238
[4]  
CLOUET E, 2004, THESIS ECOLE CENTRAL
[5]   Complex precipitation pathways in multicomponent alloys [J].
Clouet, Emmanuel ;
Lae, Ludovic ;
Epicier, Thierry ;
Lefebvre, Williams ;
Nastar, Maylise ;
Deschamps, Alexis .
NATURE MATERIALS, 2006, 5 (06) :482-488
[6]   Three dimensional atom probe investigation on the formation of Al3(Sc,Zr)-dispersoids in aluminium alloys [J].
Forbord, B ;
Lefebvre, W ;
Danoix, F ;
Hallem, H ;
Marthinsen, K .
SCRIPTA MATERIALIA, 2004, 51 (04) :333-337
[7]   Impurity diffusion of scandium in aluminum [J].
Fujikawa, SI .
DEFECT AND DIFFUSION FORUM, 1997, 143 :115-120
[8]   Temporal evolution of the nanostructure of AI(Sc,Zr) alloys:: Part I -: Chemical compositions of Al3(Sc1-xZrx) precipitatesy [J].
Fuller, CB ;
Murray, JL ;
Seidman, DN .
ACTA MATERIALIA, 2005, 53 (20) :5401-5413
[9]   Investigation of the early stages of decomposition of Cu-0.7at.% Fe with the tomographic atom probe [J].
Heinrich, A ;
Al-Kassab, T ;
Kirchheim, R .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 353 (1-2) :92-98
[10]  
LAE L, 2004, THESIS INPG
12