Coarsening of elastically interacting coherent particles--II. Simulations of preferential coarsening and particle migrations

Journal Article · Fri Jan 01 04:00:00 EST 1993 · Acta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-7151(93)90336-Q· OSTI ID:6466987

Abinandanan, T A; Johnson, W C ^[1]

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1. Carnegie Mellon Univ., Pittsburgh, PA (United States). Dept. of Materials Science and Engineering

Three-dimensional multiparticle coarsening simulations have been performed in order to examine the effect of particle misfit on the microstructural evaluation of two-phase crystalline systems. The particles are assumed to be coherent, spherical and possess a tetragonal misfit. The system is assumed to be elastically isotropic and homogeneous. The method of multipole tensors in its quadrupole approximation is used to solve the coupled elastic and diffusion problem. The elastic interaction between particles arising from the misfit strains leads to a high degree of particle alignment along elastically favorable orientations. The development of such strong spatial correlations can be understood in terms of such phenomena as enhanced coarsening of unfavorably oriented particles, retarded and inverse coarsening of favorably oriented ones and systematic particle migrations.

• DOE Contract Number: FG02-84ER45166
• OSTI ID: 6466987
• Journal Information: Acta Metallurgica et Materialia; (United States), Journal Name: Acta Metallurgica et Materialia; (United States) Vol. 41:1; ISSN 0956-7151; ISSN AMATEB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
COMPUTERIZED SIMULATION
CONFIGURATION
CORRELATIONS
DATA
DIFFUSION
DISTRIBUTION
ELASTICITY
INFORMATION
KINETICS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NUMERICAL DATA
PARTICLE SIZE
SIMULATION
SIZE
SPATIAL DISTRIBUTION
SPHERICAL CONFIGURATION
STRAINS
TENSILE PROPERTIES
THEORETICAL DATA
THREE-DIMENSIONAL CALCULATIONS