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СÀ¼»¨(½ð±Ò+2, ·­ÒëEPI+1):ллָ³ö´íÎó! ÄúµÄÓ¢ÓïºÜ°ô,ÈôÓÐʱ¼äµÄ»°,°ïæ·­ÒëÒ»²¿·Ö.лл 2010-06-24 07:40:30
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°ô×´µÚ¶þÏࣺstick second-particles
Ô²ÐεڶþÏࣺspherical second-particles
2Â¥2010-06-24 07:36:29
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From Figure 6 it can be seen,when  particle content is higher in the second phase(f> 5%) ,The more content of second-phase particles, the more obvious separation of two curves.Under the same simulation time,the average size of the abar-shaped crystal grain smaller than the spherical second-particles, Description rod second-phase particles pinning effect better than the circular second phase particles.Because the circular second-phase particles are equiaxed particles,No difference in orientation due to good spatial symmetry,Less restrictive to the evolution of the grain.Rod second-phase particles are non-equiaxed particles,which will have a certain geometric orientation in the matrix ,from Figure 1 (c) and Figure 2 (c) can be found,almost all of the contacts are line contact between boundary and  stick second-particles  particles ,the growth process of the Grain  along the length direction of the stick second-phase particles is inhibited,which lead to show the direction of grain boundary,Therefore, the  pinning effect of second phase particle for the grains of grew up in an inevitable  larger than spherical second-particles .
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3Â¥2010-06-27 20:25:12
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СÀ¼»¨(½ð±Ò+10):лл°ï棡 ÎÒÏÈ˼¿¼Ò»ÏÂÏÈ¡£ 2010-06-28 20:06:39
From Figure 6 it can be seen,when  particle content is higher in the second phase(f> 5%) ,The more content of second-phase particles, the more obvious separation of two curves.Under the same simulation time,the average size of the stick second-particles  crystal grain smaller than the spherical second-particles, Description rod second-phase particles pinning effect better than the spherical second-particles .Because the spherical second-particles are equiaxed particles,No difference in orientation due to good spatial symmetry,Less restrictive to the evolution of the grain.Rod second-phase particles are non-equiaxed particles,which will have a certain geometric orientation in the matrix ,from Figure 1 (c) and Figure 2 (c) can be found,almost all of the contacts are line contact between boundary and  stick second-particles  particles ,the growth process of the Grain  along the length direction of the stick second-phase particles is inhibited,which lead to show the direction of grain boundary,Therefore, the  pinning effect of second phase particle for the grains of grew up in an inevitable  larger than spherical second-particles .
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4Â¥2010-06-27 20:38:50
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