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       Disk second-phase particles are more effective than Spherical second-phase particles in the pinning effect on grain growth, while the directional orientation of these disk second-phase particles have big effect on pinning and different geometric orientations stick SPP are more effective than one geometric orientation stick SPP for retarding grain growth.

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Disk second-phase particle has a better performance than Spherical second-phase particle in the pinning effect on grain growth. The directional orientation of a disk second-phase particle is also an influencing factor to pinning effect. A disk second-phase particle with multiple directional orientations causes better pining effect than that with only one directional orientation.
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Compared with the spherical second-phase particle, the disk second-phase particle can exhibit better performance in the pinning effect on grain growth. As for the disk second-phase particle, the directional orientation has also impact on pinning effect. With multiple directional orientations, the disk second-phase particle can achieve better pining effect over that with one directional orientations.
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