TY - JOUR
T1 - Effects of elastic strain energy and interfacial stress on the equilibrium morphology of misfit particles in heterogeneous solids
AU - Zhao, Xujun
AU - Duddu, Ravindra
AU - Bordas, Stéphane P.A.
AU - Qu, Jianmin
PY - 2013/6
Y1 - 2013/6
N2 - This paper presents an efficient sharp interface model to study the morphological transformations of misfit particles in phase separated alloys. Both the elastic anisotropy and interfacial energy are considered. The geometry of the material interface is implicitly described by the level set method so that the complex morphological transformation of microstructures can be accurately captured. A smoothed extended finite element method is adopted to evaluate the elastic field without requiring remeshing. The equilibrium morphologies of particles are shown to depend on the elastic anisotropy, interfacial energy as well as the particle size. Various morphological transformations, such as shape changes from spheres to cuboids, directional aligned platelets and particle splitting, are observed. The simulated results are in good agreement with experimental observations. The proposed model provides a useful tool in understanding the morphological transformation of precipitates, which will facilitate the analysis and design of metallic alloys.
AB - This paper presents an efficient sharp interface model to study the morphological transformations of misfit particles in phase separated alloys. Both the elastic anisotropy and interfacial energy are considered. The geometry of the material interface is implicitly described by the level set method so that the complex morphological transformation of microstructures can be accurately captured. A smoothed extended finite element method is adopted to evaluate the elastic field without requiring remeshing. The equilibrium morphologies of particles are shown to depend on the elastic anisotropy, interfacial energy as well as the particle size. Various morphological transformations, such as shape changes from spheres to cuboids, directional aligned platelets and particle splitting, are observed. The simulated results are in good agreement with experimental observations. The proposed model provides a useful tool in understanding the morphological transformation of precipitates, which will facilitate the analysis and design of metallic alloys.
KW - Equilibrium shape
KW - Extended finite element method
KW - Level set method
KW - Morphological transformation
KW - Particle splitting
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U2 - 10.1016/j.jmps.2013.01.012
DO - 10.1016/j.jmps.2013.01.012
M3 - Article
AN - SCOPUS:84876280565
SN - 0022-5096
VL - 61
SP - 1433
EP - 1445
JO - Journal of the Mechanics and Physics of Solids
JF - Journal of the Mechanics and Physics of Solids
IS - 6
ER -