Phase separation in amorphous Ni-Nb-Y alloys

被引：28
作者：
Mattern, N.
Gemming, T.
Goerigk, G.
Eckert, J.
机构：
[1] Leibniz Inst IFW Dresden, Inst Complex Mat, D-01171 Dresden, Germany
[2] FZ Julich, Inst Solid State Res, D-52425 Julich, Germany
来源：
SCRIPTA MATERIALIA | 2007年 / 57卷 / 01期
关键词：
phase separation; metallic glass; metallic liquid; two-phase amorphous alloy;
D O I：
10.1016/j.scriptamat.2007.03.016
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Phase-separated amorphous Ni-Nb-Y alloys were prepared by means of rapid quenching from the melt. The microstructures change significantly with Ni content in accordance with the phase diagram. A polydisperse, heterogeneous amorphous structure is obtained for compositions with less than 60 at.% Ni lying within the two-phase liquid range. Strongly correlated chemical fluctuations in the nanometer range are observed in the amorphous alloys with more than 60 at.% Ni for which thermodynamically a homogeneous liquid should exist. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：29 / 32
页数：4
相关论文
共 16 条
[1]  
[Anonymous], 1992, GLASCHEMIE, DOI DOI 10.1007/978-3-662-07499-2
[2]   Approximations leading to a unified exponential power-law approach to small-angle scattering [J].
Beaucage, G .
JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1995, 28 :717-728
[3]  
BOER FR, 1988, COHESION STRUCTURE, V1
[4]   Correlating structure with fluorescence emission in phase-separated conjugated-polymer blends [J].
Chappell, J ;
Lidzey, DG ;
Jukes, PC ;
Higgins, AM ;
Thompson, RL ;
O'Connor, S ;
Grizzi, I ;
Fletcher, R ;
O'Brien, J ;
Geoghegan, M ;
Jones, RAL .
NATURE MATERIALS, 2003, 2 (09) :616-621
[5]   Glass formation and phase separation in the Ag-Cu-Zr system [J].
Kundig, A. A. ;
Ohnuma, M. ;
Ohkubo, T. ;
Abe, T. ;
Hono, K. .
SCRIPTA MATERIALIA, 2006, 55 (05) :449-452
[6]   In situ formed two-phase metallic glass with surface fractal microstructure [J].
Kündig, AA ;
Ohnuma, M ;
Ping, DH ;
Ohkubo, T ;
Hono, K .
ACTA MATERIALIA, 2004, 52 (08) :2441-2448
[7]   Microstructure and thermal behavior of two-phase amorphous Ni-Nb-Y alloy [J].
Mattern, N ;
Kühn, U ;
Gebert, A ;
Gemming, T ;
Zinkevich, M ;
Wendrock, H ;
Schultz, L .
SCRIPTA MATERIALIA, 2005, 53 (03) :271-274
[8]  
MATTERN N, UNPUB J PHASE EQUILI
[9]   A LATTICE BOLTZMANN MODEL OF BINARY-FLUID MIXTURES [J].
ORLANDINI, E ;
SWIFT, MR ;
YEOMANS, JM .
EUROPHYSICS LETTERS, 1995, 32 (06) :463-468
[10]  
Palenxona A., 1991, J PHASE EQUILIBRIA, V12, P204, DOI [10.1007/BF02645717, DOI 10.1007/BF02645717]
12