scholarly journals Three-dimensional phase field simulations of grain growth in materials containing finely dispersed second-phase particles

PAMM ◽  
2007 ◽  
Vol 7 (1) ◽  
pp. 2020001-2020002 ◽  
Author(s):  
Liesbeth Vanherpe ◽  
Nele Moelans ◽  
Bart Blanpain ◽  
Stefan Vandewalle
Keyword(s):  
Grain Growth ◽  
Phase Field ◽  
Three Dimensional ◽  
Second Phase ◽  
Second Phase Particles

Grain Growth of Polycrystalline AZ31 Mg Alloy Containing Second Phase Particles by Phase Field Simulation

2016 ◽  
Vol 850 ◽  
pp. 307-313
Author(s):  
Yan Wu ◽  
Si Xia ◽  
Bernie Ya Ping Zong
Keyword(s):  
Particle Size ◽  
Grain Growth ◽  
Phase Field ◽  
Phase Field Model ◽  
Free Energy Density ◽  
Critical Value ◽  
Spherical Particles ◽  
Second Phase ◽  
Pinning Effect ◽  
Second Phase Particles

A phase field model has been established to simulate the grain growth of AZ31 magnesium alloy containing spherical particles with different sizes and contents under realistic spatial-temporal scales. The expression term of second phase particles are added into the local free energy density equation, and the simulated results show that the pinning effect of particles on the grain growth is increased when the contents of particles is increasing, which is consistent with the law of Zener pinning. There is a critical particle size to affect the grain growth in the microstructure. If the size of particles is higher than the critical value, the pinning effect of particles for grain growth will be increased with further decreasing the particle size; however the effect goes opposite if the particle size is lower than the critical value.

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