Phase-field study for the splitting mechanism of coherent misfitting precipitates in anisotropic elastic media

被引：57
作者：
Cha, PR
Yeon, DH
Chung, SH
机构：
[1] Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South Korea
[2] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151742, South Korea
[3] Korea Inst Sci & Technol, Met Proc Res Ctr, Div Mat Sci & Technol, Seoul 136791, South Korea
来源：
SCRIPTA MATERIALIA | 2005年 / 52卷 / 12期
关键词：
phase transformation; microstructure; phase-field models; coherent precipitates; particle splitting;
D O I：
10.1016/j.scriptamat.2005.02.026
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Through a phase-field study upon the splitting behavior and morphological evolution of coherent precipitates, we show that an interface instability driven by elastic anisotropy and a diffusion field can generate elastically induced splitting during diffusional phase transition. Particle splitting is triggered by interface grooving which advances by penetrating grooves into the interior of the particle. The sequential evolution of shapes during the splitting process is in good agreement with previous experiments. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1241 / 1245
页数：5
相关论文
共 25 条
[1]   INTERFACE MORPHOLOGY DEVELOPMENT DURING STRESS-CORROSION CRACKING .1. VIA SURFACE DIFFUSION [J].
ASARO, RJ ;
TILLER, WA .
METALLURGICAL TRANSACTIONS, 1972, 3 (07) :1789-&
[2]   Coarsening kinetics of coherent precipitates in Ni-Al-Mo and Fe-Ni-Al alloys [J].
Calderon, HA ;
Kostorz, G ;
Qu, YY ;
Dorantes, HJ ;
Cruz, JJ ;
CabanasMoreno, JG .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 238 (01) :13-22
[3]   A phase field model for isothermal solidification of multicomponent alloys [J].
Cha, PR ;
Yeon, DH ;
Yoon, JK .
ACTA MATERIALIA, 2001, 49 (16) :3295-3307
[4]  
DOI M, 1992, MATER T JIM, V33, P637, DOI 10.2320/matertrans1989.33.637
[5]  
DOI M, 1984, MATER SCI ENG, V67, P247, DOI 10.1016/0025-5416(84)90056-9
[6]  
DOI M, 1985, MATER SCI ENG, V74, P139, DOI 10.1016/0025-5416(85)90427-6
[7]   Modeling of phase separation in alloys with coherent elastic misfit [J].
Fratzl, P ;
Penrose, O ;
Lebowitz, JL .
JOURNAL OF STATISTICAL PHYSICS, 1999, 95 (5-6) :1429-1503
[8]  
Grinfel'd M. A., 1986, Soviet Physics - Doklady, V31, P831
[9]   A phase-field model for evolving microstructures with strong elastic inhomogeneity [J].
Hu, SY ;
Chen, LQ .
ACTA MATERIALIA, 2001, 49 (11) :1879-1890
[10]   Elastic strain energy of inhomogeneous solids [J].
Khachaturyan, AG ;
Semenovskaya, S ;
Tsakalakos, T .
PHYSICAL REVIEW B, 1995, 52 (22) :15909-15919
123