Pinning effect of second-phase particles on grain growth in polycrystalline films studied by 3-D phase field simulations

被引:136
作者
Moelans, N. [1 ]
Blanpain, B. [1 ]
Wollants, P. [1 ]
机构
[1] Katholieke Univ Leuven, Dept Met & Mat Engn, B-3001 Louvain, Belgium
关键词
phase field models; simulation; grain growth; thin films; Zener pinning;
D O I
10.1016/j.actamat.2006.11.018
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Three-dimensional simulations of grain growth in thin films containing finely dispersed second-phase particles were performed using a phase field model. The simulations show that although the growth behavior of the columnar grain structures in thin films is essentially two-dimensional, the interaction between the particles and the grain boundaries is three-dimensional. Grain boundaries can therefore more easily break free from the particles than in purely two-dimensional systems, resulting in fewer grain boundary-particle intersections and a larger final grain size. For a given volume fraction f(v) and size of the particles r, the final grain size (R) over bar (lim), increases with film thickness. Moreover, it was found that particles located in the middle of the film are most efficient in pinning grain boundaries. A classical Zener type relation <(Rover bar>(lim) /r = K(1/f(v)(b)) cannot describe these effects. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:2173 / 2182
页数:10
相关论文
共 47 条
[1]   INHIBITION OF GRAIN-GROWTH BY 2ND PHASE PARTICLES - 3 DIMENSIONAL MONTE-CARLO COMPUTER-SIMULATIONS [J].
ANDERSON, MP ;
GREST, GS ;
DOHERTY, RD ;
LI, K ;
SROLOVITZ, DJ .
SCRIPTA METALLURGICA, 1989, 23 (05) :753-758
[2]  
ASHBY MF, 1969, T METALL SOC AIME, V245, P413
[3]   THEORIES OF NORMAL GRAIN-GROWTH IN PURE SINGLE-PHASE SYSTEMS [J].
ATKINSON, HV .
ACTA METALLURGICA, 1988, 36 (03) :469-491
[4]   Computer simulation of strain energy effects vs surface and interface energy effects on grain growth in thin films [J].
Carel, R ;
Thompson, CV ;
Frost, HJ .
ACTA MATERIALIA, 1996, 44 (06) :2479-2494
[5]   Applications of semi-implicit Fourier-spectral method to phase field equations [J].
Chen, LQ ;
Shen, J .
COMPUTER PHYSICS COMMUNICATIONS, 1998, 108 (2-3) :147-158
[6]   A NOVEL COMPUTER-SIMULATION TECHNIQUE FOR MODELING GRAIN-GROWTH [J].
CHEN, LQ .
SCRIPTA METALLURGICA ET MATERIALIA, 1995, 32 (01) :115-120
[7]   3D finite element simulation of the inhibition of normal grain growth by particles [J].
Couturier, G ;
Doherty, R ;
Maurice, C ;
Fortunier, R .
ACTA MATERIALIA, 2005, 53 (04) :977-989
[8]  
DOHERTY RD, 1982, MET SCI, V16, P1, DOI 10.1179/030634582790427019
[9]  
Fan D, 1998, J AM CERAM SOC, V81, P526, DOI 10.1111/j.1151-2916.1998.tb02370.x
[10]   Computer simulation of grain growth using a continuum field model [J].
Fan, D ;
Chen, LQ .
ACTA MATERIALIA, 1997, 45 (02) :611-622