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Recrystallization in Multi Phase Materials Containing Particles with A Two—Class Size Distribution |
SONG Xiaoyan; R. Markus; ZHANG Jiuxing |
College of Materials Science and Engineering; Beijing University of |
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Cite this article:
SONG Xiaoyan; R. Markus; ZHANG Jiuxing. Recrystallization in Multi Phase Materials Containing Particles with A Two—Class Size Distribution. Acta Metall Sin, 2004, 40(10): 1009-1017 .
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Abstract Recrystallization in multi-phase materials containing particles with a
two-class size distribution was studied with modeling and experiments.
A 3D Monte-Carlo model combined with deterministic criteria was developed
to describe nucleation stimulated by coarse particles and pinning effect of
fine particles. The influences of various particle parameters on nucleation
and growth of recrystallizing grains were quantitatively studied by
simulations. The results show that the efficiency of particle stimulated
nucleation depends on the stored energy in the particle-affected
region and the local distribution of fine particles. The competition
between the local stored energy, as the driving force for recrystallization,
and the dragging force from fine particles, determines the final state of
complete recrystallization, partial recrystallization or fully inhibited
recrystallization in the whole material. Good agreements of morphologies
and recrystallization kinetics are found in comparison between
experiments and simulations for a series of Al-(0.3-1.1)%Zr
(mass fraction) alloys under the same deformation and particle parameters.
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Received: 26 November 2003
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